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

robin \rob"in\, n. properly a pet name for robert, originally
   meaning, famebright; f., fron ohg. roudperht; ruod in comp.;
   akin to as. hr?? glory, fame, goth. hr?peigs victorius +
   beraht bright. see bright, hob a clown. zool.
   a a small european singing bird erythacus rubecula,
       having a reddish breast; -- called also robin
       redbreast, robinet, and ruddock.
   b an american singing bird merula migratoria, having
       the breast chestnut, or dull red. the upper parts are
       olive-gray, the head and tail blackish. called also
       robin redbreast, and migratory thrush.
   c any one of several species of australian warblers of the
       genera petroica, melanadrays, and allied genera; as,
       the scarlet-breasted robin petroica mullticolor.
   d any one of several asiatic birds; as, the indian robins.
       see indian robin, below.
       1913 webster

   beach robin zool., the robin snipe, or knot. see knot.
      

   blue-throated robin. zool. see bluethroat.

   canada robin zool., the cedar bird.

   golden robin zool., the baltimore oriole.

   ground robin zool., the chewink.

   indian robin zool., any one of several species of asiatic
      saxoline birds of the genera thamnobia and pratincola.
      they are mostly black, usually with some white on the
      wings.

   magrie robin zool., an asiatic singing bird corsycus
      saularis, having the back, head, neck, and breast black
      glossed with blue, the wings black, and the belly white.
      

   ragged robin. bot. see under ragged.

   robin accentor zool., a small asiatic singing bird
      accentor rubeculoides, somewhat resembling the
      european robin.

   robin redbreast. zool.
   a the european robin.
   b the american robin.
   c the american bluebird.

   robin snipe. zool.
   a the red-breasted snipe, or dowitcher.
   b the red-breasted sandpiper, or knot.

   robin's plantain. bot. see under plantain.

   sea robin. zool.
   a any one of several species of american gurnards of the
       genus prionotus. they are excellent food fishes. called
       also wingfish. the name is also applied to a european
       gurnard.
   b the red-breasted merganser, or sheldrake. local, u.s.
       

   water robin zool., a redstart ruticulla fuliginosa,
      native of india.
      1913 webster
see also:
bright hob erythacus rubecula robin redbreast robinet ruddock 
merula migratoria robin redbreast migratory thrush petroica melanadrays 
petroica mullticolor indian robin beach robin knot blue-throated robin 
bluethroat canada robin golden robin ground robin thamnobia 
pratincola magrie robin corsycus saularis ragged robin ragged 
robin accentor accentor rubeculoides robin redbreast robin snipe robin's plantain 
plantain sea robin prionotus wingfish water robin 
ruticulla fuliginosa 

[2] : WordNet (r) 2.0

robin
     n 1: small old world songbird with a reddish breast syn: redbreast,
           robin redbreast, old world robin, erithacus
          rubecola
     2: large american thrush having a rust-red breast and abdomen
        syn: american robin, turdus migratorius
see also:
redbreast robin redbreast old world robin erithacus rubecola american robin turdus migratorius 

Robin >> R Words
Robin, definition of term: Robin
robin_pag1.html

Robin Hood >> R Words
Robin Hood, definition of term: Robin Hood
robin+hood_pag1.html

Round Robin >> R Words
Round Robin, definition of term: Round Robin
round+robin_pag1.html

American Robin >> A Words
American Robin, definition of term: American Robin
american+robin_pag1.html