n. 1 the long flexible trunk or snout of some mammals, e.g. an elephant or tapir. 2 the elongated mouth parts of some insects. 3 the sucking organ in some worms. 4 joc. the human nose. proboscis monkey a monkey, Nasalis larvatus, native to Borneo, the male of which has a large pendulous nose. proboscidiferous adj. proboscidiform adj.
[ L proboscis -cidis f. Gk proboskis f. probosko (as PRO-(2), bosko feed) ]