Green’s Dictionary of Slang

picklepuss n.

[SE pickle, a sour gherkin + puss n.2 (2)]

(US) a sour-faced individual; thus pickle-pussed adj.

Show quotations
[US]Wash. Post 12 Mar. 16/8: Pickle-Pussed Jock [i.e. boxer Jock McAvoy] will be a slight favorite in the betting.
Princeton University WordNet 1.6 at dictionary.com 🌐 picklepuss n : (informal) someone with a habitually sullen or gloomy expression.