dap
noun [ C ] US informal uk/dæp/ us/dæp/
触拳（以示问候、庆祝或崇敬等）
a greeting or an expression of admiration in which two people knock their fists together
Barack Obama and his wife, Michelle, exchanged a dap during an election night rally. 巴拉克 · 奥巴马和他的妻子米歇尔在选举之夜的集会上触拳相庆。