出典:Wiktionary
The origin of the slang sense “skilled (at a game)” is disputed, but may derive from the much older term crack shot (“one who is skilled at shooting”). This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term.
cracked (comparative more cracked, superlative most cracked)
「cracked」は動詞「crack」の過去形、または過去分詞です