An old trout American British noun phrase slang
If you describe someone as an old trout, you mean that she is an annoying and unpleasant old woman.
My wife is a bit of an old trout but she can manage the household well.
This old trout over there makes me feel quite angry and impatient.
Calm down! Let's get rid of all words that old trout said this morning.
King George V's last words