A gaggle is a term of venery for a flock of geese that isn't in flight; in flight, the group can be called a skein. In military slang, a gaggle is an unorganized group doing nothing. In aviation, it's a large, loosely organized tactical formation of aircraft. Gaggle of 16 In colloquial Western Canadian English, a gaggle is an adjective describing a largely disorganized group of Jildos (another colloquial adjective describing a woman that tends to be annoying and lacking in her own individual op… (More on Gaggle)