SENSILLUM

[sen.sil.lum] also sen.sil.la n, pl -sil.la also -sil.lae [NL sensillum, dim. of ML sensus sense organ, fr. L, sense] (1925): a simple epithelial sense organ of an invertebrate (as an insect) usu. in the form of a spine, plate, rod, cone, or peg that is composed of one or a few cells with a nerve connection