The Collaborative International Dictionary of English v.0.48:

Alkekengi \Al`ke*ken"gi\, n. [Cf. F. alk['e]kenge, Sp.
   alquequenje, ultimately fr. Ar. al-k[=a]kanj a kind of resin
   from Herat.] (Bot.)
   An herbaceous plant of the nightshade family (Physalis
   alkekengi) and its fruit, which is a well flavored berry,
   the size of a cherry, loosely inclosed in a enlarged leafy
   calyx; -- also called winter cherry, ground cherry, and
   strawberry tomato. --D. C. Eaton.
   [1913 Webster]