high five

plural high fives · alternative high-five

1. countableuncountableA gesture of celebration or victory in which two people slap the palms of their hands together at shoulder height or higher.

   Through the window I could see Nikki and Kim doing high fives in the car.

   1995, Paul Vautin, Turn It Up!, Sydney: Pan Macmillan Australia, page 144

2. countableuncountableA game which uses a technique providing a user with an emotional reward after they complete a minor task or achievement.
3. uncountablecard gamesThe game of cinch.

present singular third person high fives · participle present high fiving · participle past high fived · past high fived · alternative high-five

1. transitiveTo slap high fives.

   Like a lot of my fellow passengers — indie-rock fans who had signed up for a three-day voyage full of bands and beverages — I’d never been on a cruise before. So I don’t know whether most of them begin with a staff member high-fiving each and every person who comes off the gangway.

   2012 March 30, Joe Levy, “Rockers at Sea”, in The New York Times