Source : Webster's Revised Unabridged Dictionary (1913)

Megachile \Meg"a*chile\, n. [Mega- + Gr. ? lip.] (Zo["o]l.)
   A leaf-cutting bee of the genus {Megachilus}. See {Leaf
   cutter}, under {Leaf}.

Source : WordNet®

Megachile
     n : type genus of the Megachilidae: leaf-cutting bees [syn: {genus
         Megachile}]