The Collaborative International Dictionary of English v.0.48:

Scopula \Scop"u*la\, n.; pl. E. Scopulas, L. Scopulae. [L.
   scopulae, pl. a little broom.] (Zool.)
   (a) A peculiar brushlike organ found on the foot of spiders
       and used in the construction of the web.
   (b) A special tuft of hairs on the leg of a bee.
       [1913 Webster]