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

sorrel \sor"rel\, n. f. surelle, fr. sur sour, fr. ohg. s?r
   sour. see sour. bot.
   one of various plants having a sour juice; especially, a
   plant of the genus rumex, as rumex acetosa, rumex
   acetosella, etc.
   1913 webster

   mountain sorrel. bot. see under mountain.

   red sorrel. bot.
   a a malvaceous plant hibiscus sabdariffa whose acid
       calyxes and capsules are used in the west indies for
       making tarts and acid drinks.
   b a troublesome weed rumex acetosella, also called
       sheep sorrel.

   salt of sorrel chem., binoxalate of potassa; -- so called
      because obtained from the juice of rumex acetosella, or
      rumex axetosa.

   sorrel tree bot., a small ericaceous tree oxydendrum
      arboreum whose leaves resemble those of the peach and
      have a sour taste. it is common along the alleghanies.
      called also sourwood.

   wood sorrel bot., any plant of the genus oxalis.
      1913 webster
see also:
sour rumex rumex acetosa rumex acetosella mountain sorrel mountain 
red sorrel hibiscus sabdariffa rumex acetosella sheep sorrel salt of sorrel 
rumex axetosa sorrel tree oxydendrum arboreum sourwood wood sorrel 

[2] : WordNet (r) 2.0

sorrel tree
     n 1: deciduous shrubby tree of eastern north america having
          deeply fissured bark and sprays of small fragrant white
          flowers and sour-tasting leaves syn: sourwood, titi,
           oxydendrum arboreum
     2: australian tree with acid foliage syn: hibiscus
        heterophyllus
see also:
sourwood titi oxydendrum arboreum hibiscus heterophyllus 

Cypress Tree >> C Words
Cypress Tree, definition of term: Cypress Tree
cypress+tree_pag1.html

Christmas Tree >> C Words
Christmas Tree, definition of term: Christmas Tree
christmas+tree_pag1.html

Chinaberry Tree >> C Words
Chinaberry Tree, definition of term: Chinaberry Tree
chinaberry+tree_pag1.html

Cherry Tree >> C Words
Cherry Tree, definition of term: Cherry Tree
cherry+tree_pag1.html

Elder Tree >> E Words
Elder Tree, definition of term: Elder Tree
elder+tree_pag1.html

Family Tree >> F Words
Family Tree, definition of term: Family Tree
family+tree_pag1.html

Flame Tree >> F Words
Flame Tree, definition of term: Flame Tree
flame+tree_pag1.html

Fir Tree >> F Words
Fir Tree, definition of term: Fir Tree
fir+tree_pag1.html

Fig Tree >> F Words
Fig Tree, definition of term: Fig Tree
fig+tree_pag1.html

Fever Tree >> F Words
Fever Tree, definition of term: Fever Tree
fever+tree_pag1.html

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