'Calamistrum' definitions:

Definition of 'Calamistrum'

From: GCIDE

Calamistrum \Cal`a*mis"trum\, n. [L., a curling iron.] (Zool.) A comblike structure on the metatarsus of the hind legs of certain spiders (Ciniflonid[ae]), used to curl certain fibers in the construction of their webs. [1913 Webster]