Any large fly troublesome to cattle, as the gadflies and breeze flies. [1913 Webster]

alder fly, american fly honeysuckle, american pit bull terrier, antlion fly, bar fly, battle of bull run, bee fly, berna fly, black fly, blow fly, blue bull, boston bull, breeze fly, bull, bull bay, bull brier, bull fiddle, bull market, bull mastiff, bull moose, bull moose party, bull neck, bull nettle, bull nose, bull pine, bull run, bull session, bull shark, bull snake, bull terrier, bull thistle, bull through, bull tongue, bull trout, burrel fly, caddice fly, caddis fly, canker fly, chalcid fly, chalcis fly, columbatz fly, crane fly, deer fly fever, dobson fly, dry fly, european fly honeysuckle, fish fly, flesh fly, fly, fly agaric, fly amanita, fly ash, fly ball, fly blind, fly bridge, fly by, fly casting, fly contact, fly front, fly fungus, fly high, fly honeysuckle, fly in the face of, fly in the ointment, fly in the teeth of, fly off the handle, fly on, fly open, fly orchid, fly poison, fly rod, fly sheet, fly tent, fly the coop, fruit fly, golden-eyed fly, greenbottle fly, hanging fly, harvest fly, hemerobiid fly, hessian fly, horn fly, horse fly, house fly, ichneumon fly, irish bull, john bull, lacewing fly, lantern fly, let fly, let fly at, long fly, louse fly, mediterranean fruit fly, on the fly, papal bull, pit bull terrier, pomace fly, pop fly, robber fly, sacrifice fly, sand fly, scorpion fly, shoo fly, sitting bull, spanish fly, staffordshire bull terrier, stink fly, stone fly, streamer fly, swamp fly honeysuckle, syrphus fly, tachina fly, take the bull by the horns, taurus the bull, test fly, tsetse fly, tzetze (or tsetse) fly, tzetze fly, vinegar fly, warble fly, warega fly, wet fly, white fly