high five 
informal, chiefly North American
noun
A gesture of celebration or greeting in which two people slap each other’s palms with their arms raised.As the survivors were escorted to the ambulance, we gave each other high fives in celebration of our first rescue....
- The offenders are no longer laughing and slapping each other high fives.
- It is not inconceivable that multitudes of IRS Agents were watching the show, giving each other high fives at the outcome, because, well, no matter who won, so did the IRS.
verb
(high-five) [with object] Greet (someone) by slapping the palms of their raised arms with one’s own: the two officers high-fived each other...
- The owners were greeted by hundreds of fans who lined the streets, along with all the players, who were high-fiving the fans.
- Our drivers weave us in and out of the city traffic, and out into the villages, where kids line the roads, shouting Hello at us and high-fiving us as we scoot past.
- Woods yelled and began high-fiving Williams, while spectators did the same with strangers next to them.
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- pentameter
- pentamethylene
- pentamethylenediamine
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- pentamidine
- Pentandria
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