IPA: /bɪˈɡraɪm/
KK: /bɪˈɡraɪm/
To make something dirty or covered with grime.
The children begrimed their clothes while playing in the mud.
Past: begrimed
Past Participle: begrimed
Begrime is formed from "be-" (meaning to cover or affect) and "grime" (from Old English "grima", meaning dirt or filth). The word means to cover something with dirt or to make it dirty.
Think of 'covering' ('be-') something with 'dirt' ('grime') — that's why begrime means to make something dirty.