the world > action or operation > behaviour > good behaviour > courtesy > courteous act or expression > use formal courtesy in act or expression [verb (intransitive)] > greet > slap hands (2)
transitive. To congratulate, celebrate with, or greet (a person) with a high five. Also with it. Cf. low-five, v. 2.
Originally U.S. Sport. A gesture of celebration, congratulation, or greeting in which two people slap each other's palms, typically with their…