oxalis noun.
['ɒksǝlɪs, ɒk'sɑ:lɪs] E17.[Latin from Greek = sorrel, from oxus sour, acid (with ref. to the sharp-tasting leaves).]Formerly, sorrel,
Rumex acetosa. Now, any of various plants of the genus
Oxalis (family Oxalidaceae), with delicate pentamerous flowers and usu. trifoliate leaves.
[TahlilGaran] English Dictionary ▲