Source : Webster's Revised Unabridged Dictionary (1913)

Samara \Sa*ma"ra\ (? or ?), n. [L. samara, samera, the seed of
   the elm.] (Bot.)
   A dry, indehiscent, usually one-seeded, winged fruit, as that
   of the ash, maple, and elm; a key or key fruit.

Source : WordNet®

samara
     n : a winged often one-seed indehiscent fruit as of the ash or
         elm or maple [syn: {key fruit}, {key}]