noun
Also moaning Minnie, Moaning Minnie
Also moaning Minnie, Moaning Minnie noun, derog 1: = minnienoun. (1941 —) . 2: A person who is pessimistic and always complaining. (1962 —) . New Zealand News I don't want to give the impression of being a moaning Minnie but may I...make a special plea to the railmen to...get back to work (1972).
[In sense 1, from the noise made by the projectile in flight.]