Alternative form of green bottle fly

Eristalis alleni, a species of flower fly from Costa Rica.

A species of flower fly from Costa Rica, Eristalis gatesi.

(idiomatic) To pilot an aircraft without the aid of instruments and without a flight plan, using only instinct, visual observation, and practical judgment.

plural of flying purple people eater

(US) A fanciful monster.

(simile) To be frantic, harried or restless

Alternative form of when pigs fly

(idiomatic) To become overly ambitious or greedy.

(colloquial) To start behaving properly; get one's act together.