fistbump
noun [ C ] uk/ˈfɪst.bʌmp/ us/ˈfɪst.bʌmp/
击拳问好（一种问候的方式）
a friendly greeting in which you touch someone's fist (= closed hand) with your own fist
His fans greeted him with fistbumps of congratulation. 他的球迷们跟他击拳庆祝胜利。
fistbump
verb [ T ] uk/ˈfɪst.bʌmp/ us/ˈfɪst.bʌmp/
击拳问好
to greet someone in a friendly way by touching their fist with your own fist
If I saw him I'd walk up to him and fistbump him. 如果我看见他，就会走上前去击拳问好。