Calamistrum
Pronunciation : Cal`a*mis"trum
Part of Speech : n.
Etymology : [L., a curling iron.] (Zo?l.)
Definition : Defn: A comblike structure on the metatarsus of the hind legs of certain spiders (Ciniflonid?), used to curl certain fibers in the construction of their webs.
Source : Webster's Unabridged Dictionary, 1913