The Collaborative International Dictionary
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. Mountain sorrel. (Bot.) See under Mountain. Red sorrel. (Bot.)
A malvaceous plant ( Hibiscus Sabdariffa) whose acid calyxes and capsules are used in the West Indies for making tarts and acid drinks.
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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.