Definition of "dunk"

To submerge briefly in a liquid.  examples

To set down carelessly.  examples

(transitive, intransitive, basketball) To put the ball directly downward through the hoop while grabbing onto the rim with power.  examples

(intransitive, Internet slang) To put down on social media [+ on (object)].

The act or instance of dunking, particularly in basketball.  quotations  examples