From Wiktionary, the free dictionary
fist-bump (plural fist-bumps)
- Alternative form of fist bump
2020 October 31, Matt Flegenheimer, “Campaign 2020: Let's Never Do This Again”, in New York Times[1]:Eventually, Mr. Valdes spotted two former students, approaching for fist-bumps. “I’m happy for you guys,” he said quickly, playing it cool.