We found one dictionary that defines the word cou'dst:

General (1 matching dictionary)

1. cou'dst: Wiktionary

Definitions from Wiktionary (Cou'dst) ▸ verb:  Obsolete form of couldst. ▸ Words similar to cou'dst ▸ Usage examples for cou'dst ▸ Idioms related to cou'dst ▸ Wikipedia articles (New!) ▸ Words that often appear near cou'dst ▸ Rhymes of cou'dst ▸ Invented words related to cou'dst