Eruca

from WordNet (r) 3.0 (2006)

Eruca
    n 1: annual to perennial herbs of the Mediterranean region [syn:
         {Eruca}, {genus Eruca}]

from The Collaborative International Dictionary of English v.0.48

Eruca \E*ru"ca\, n.; pl. {Eruc[ae]}. [L., a caterpillar, also, a
   sort of colewort.] (Zo["o]l.)
   An insect in the larval state; a caterpillar; a larva.
   [1913 Webster]