- the practice of making a loud and effusive display of friendliness, cordiality, etc., as by slapping persons on the back.
verb (used with object), back·slapped, back·slap·ping.
- to subject to backslapping.
verb (used without object), back·slapped, back·slap·ping.
- to engage in backslapping.
- a hearty slap on the back given as a token of affability or congratulation: The bridegroom received many a warm handshake and backslap.