cats and dogs noun 3adverb 1 noun[plural only]3 •A heavy rain; a large amount of rain.With a good blinding snowfall, or a pelting downpour of cats and dogs, I might have hoped for a respite. What a Christmas offering for my mother! I say! — 1901 •People or things that constantly fight (see fight like cats and dogs). •Stocks that can be purchased cheaply but are unlikely to produce much profit. adverb1 •Heavily; copiously; a lot.
