[1] : The Collaborative International Dictionary of English v.0.48

marsh \marsh\, n. oe. mersch, as. mersc, fr. mere lake. see
   mere pool, and cf. marish, morass.
   a tract of soft wet land, commonly covered partially or
   wholly with water; a fen; a swamp; a morass. written also
   marish.
   1913 webster

   marsh asphodel bot., a plant nartheeium ossifragum
      with linear equitant leaves, and a raceme of small white
      flowers; -- called also bog asphodel.

   marsh cinquefoil bot., a plant potentilla palustris
      having purple flowers, and found growing in marshy places;
      marsh five-finger.

   marsh elder. bot.
   a the guelder-rose or cranberry tree viburnum opulus.
   b in the united states, a composite shrub growing in salt
       marshes iva frutescens.

   marsh five-finger. bot. see marsh cinquefoil above.
      

   marsh gas. chem. see under gas.

   marsh grass bot., a genus spartina of coarse grasses
      growing in marshes; -- called also cord grass. the tall
      spartina cynosuroides is not good for hay unless cut
      very young. the low spartina juncea is a common
      component of salt hay.

   marsh harrier zool., a european hawk or harrier circus
      aeruginosus; -- called also marsh hawk, moor hawk,
      moor buzzard, puttock.

   marsh hawk. zool.
   a a hawk or harrier circus cyaneus, native of both
       america and europe. the adults are bluish slate above,
       with a white rump. called also hen harrier, and mouse
       hawk.
   b the marsh harrier.

   marsh hen zool., a rail; esp., rallus elegans of
      fresh-water marshes, and rallus longirostris of
      salt-water marshes.

   marsh mallow bot., a plant of the genus althaea 
      althaea officinalis common in marshes near the
      seashore, and whose root is much used in medicine as a
      demulcent.

   marsh marigold. bot. see in the vocabulary.

   marsh pennywort bot., any plant of the umbelliferous
      genus hydrocotyle; low herbs with roundish leaves,
      growing in wet places; -- called also water pennywort.
      

   marsh quail zool., the meadow lark.

   marsh rosemary bot., a plant of the genus statice
      statice limonium, common in salt marshes. its root is
      powerfully astringent, and is sometimes used in medicine.
      called also sea lavender.

   marsh samphire bot., a plant salicornia herbacea
      found along seacoasts. see glasswort.

   marsh st. john's-wort bot., an american herb elodes
      virginica with small opposite leaves and flesh-colored
      flowers.

   marsh tea. bot.. same as labrador tea.

   marsh trefoil. bot. same as buckbean.

   marsh wren zool., any species of small american wrens of
      the genus cistothorus, and allied genera. they chiefly
      inhabit salt marshes.
      1913 webster
see also:
mere marish morass marish marsh asphodel nartheeium ossifragum 
bog asphodel marsh cinquefoil potentilla palustris marsh elder viburnum opulus 
iva frutescens marsh five-finger marsh gas gas marsh grass 
spartina cord grass spartina cynosuroides spartina juncea marsh harrier 
circus aeruginosus marsh hawk moor hawk moor buzzard puttock 
marsh hawk circus cyaneus hen harrier mouse hawk marsh hen 
rallus elegans rallus longirostris marsh mallow althaea althaea officinalis 
marsh marigold marsh pennywort hydrocotyle water pennywort marsh quail 
marsh rosemary statice statice limonium sea lavender marsh samphire 
salicornia herbacea glasswort marsh st. john's-wort elodes virginica marsh tea 
labrador tea marsh trefoil buckbean marsh wren cistothorus 

[2] : The Collaborative International Dictionary of English v.0.48

marsh marigold \marsh mar"igold\ maumrsh
   ma^r"i^g-old. bot.
   a perennial plant of the genus caltha caltha palustris,
   growing in wet places and bearing bright yellow flowers. in
   the united states it is used as a pot herb under the name of
   cowslip. see cowslip.
   1913 webster
see also:
caltha caltha palustris cowslip cowslip 

[3] : The Collaborative International Dictionary of English v.0.48

marigold \mar"igold\, n. mary + gold. bot.
   a name for several plants with golden yellow blossoms,
   especially the calendula officinalis see calendula, and
   the cultivated species of tagetes.
   1913 webster

   note: there are several yellow-flowered plants of different
         genera bearing this name; as, the african marigold or
         french marigold of the genus tagetes, of which
         several species and many varieties are found in
         gardens. they are mostly strong-smelling herbs from
         south america and mexico: bur marigold, of the genus
         bidens; corn marigold, of the genus chrysanthemum
         chrysanthemum segetum, a pest in the cornfields of
         italy; fig marigold, of the genus
         mesembryanthemum; marsh marigold, of the genus
         caltha caltha palustris, commonly known in
         america as the cowslip. see marsh marigold.
         1913 webster

   marigold window. arch. see rose window, under rose.
      1913 webster
see also:
calendula officinalis calendula tagetes african marigold french marigold bur marigold 
bidens corn marigold chrysanthemum chrysanthemum segetum fig marigold 
mesembryanthemum marsh marigold caltha caltha palustris cowslip 
marsh marigold marigold window rose window rose 

[4] : WordNet (r) 2.0

marsh marigold
     n : swamp plant of europe and north america having bright yellow
         flowers resembling buttercups syn: kingcup, meadow
         bright, may blob, cowslip, water dragon, caltha
         palustris
see also:
kingcup meadow bright may blob cowslip water dragon caltha palustris 

Marigold >> M Words
Marigold, definition of term: Marigold
marigold_pag1.html

Marsh >> M Words
Marsh, definition of term: Marsh
marsh_pag1.html

Marsh Mallow >> M Words
Marsh Mallow, definition of term: Marsh Mallow
marsh+mallow_pag1.html

Marsh Elder >> M Words
Marsh Elder, definition of term: Marsh Elder
marsh+elder_pag1.html

Marsh Hawk >> M Words
Marsh Hawk, definition of term: Marsh Hawk
marsh+hawk_pag1.html

Salt Marsh >> S Words
Salt Marsh, definition of term: Salt Marsh
salt+marsh_pag1.html