fleck (v.)
late 14c., probably from Old Norse flekka "to spot," from Proto-Germanic *flekk- (cognates: Middle Dutch vlecke, Old High German flec, German Fleck), from PIE *pleik- "to tear" (see flay). Related: Flecked; flecking.
fleck (n.)
1590s, from fleck (v.) or else from Middle Dutch vlecke or Old Norse flekkr.