nudnick, nudnik - (Yiddish) someone who is a boring pest

persecutor, tormenter, tormentor - someone who torments

fly - two-winged insects characterized by active flight

botfly - stout-bodied hairy dipterous fly whose larvae are parasites on humans and other mammals

warble fly - hairy bee-like fly whose larvae produce lumpy abscesses (warbles) under the skin of cattle

cleg, clegg, horse fly, horsefly - large swift fly the female of which sucks blood of various animals