A high five is a slap of raised palms in celebration. Give a high five.
The five is the fingers of the hand, and the high distinguishes it from a low one. The gesture is American and dates only from the late 1970s.
1nounhigh fiveA slap of raised palms in celebration.
“The high five missed completely and everybody saw it.”
high five is a gesture.
High plus five, from the five fingers of a raised hand.
From high + five. The five refers to the five fingers of each hand.
Etymology from Wiktionary, CC BY-SA
Practised in Body Language & Gestures