fistbump
US /ˈfɪst.bʌmp/
UK /ˈfɪst.bʌmp/
1.
a gesture in which two people lightly tap their clenched fists together, typically as a greeting or to express approval.
:
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They exchanged a fistbump after closing the deal.
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The coach gave each player a fistbump as they left the field.
1.
to perform a fistbump with someone.
:
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Let's fistbump to seal the deal.
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He reached out to fistbump his teammate.