n. (c./u.)名詞 (可算/不可算)目標を達成しようとすることI will take a crack at doing the puzzle
v.t./i.動詞 (他動詞/自動詞)目標を目指すIt will only take a few more months before I can crack 11 seconds for the 100m
n. (c./u.)名詞 (可算/不可算)身体への不意打ちThe whip came round and delivered a short, sharp crack to the horse
v.t./i.動詞 (他動詞/自動詞)ヒビを入れる:割るAre you okay? Did you crack your head on something?
n. (c./u.)名詞 (可算/不可算)何かについての冗談、または無礼なコメントThere is no need to make a crack about gay people, seriously it’s just not right
v.t./i.動詞 (他動詞/自動詞)冗談を言うHe loves to crack jokes about stupid people
v.t./i.動詞 (他動詞/自動詞)謎を解くThe military spent years trying to crack the enemy's secret code
n. (c./u.)名詞 (可算/不可算)短くて予想外の大きな音The stick broke with a sharp crack when she stood on it
v.t./i.動詞 (他動詞/自動詞)パリっとする音を出すHe thought that if he could crack the whip, the horse might then move
v.t./i.動詞 (他動詞/自動詞)精神的に参ってしまうThese devices can crack because of too much pressure
v.t./i.動詞 (他動詞/自動詞)ヒビが入るOver time, the road surface began to crack in the heat
n. (c./u.)名詞 (可算/不可算)二つの物や部分の間の小さな隙間A crack had developed in the Earth because of the heat