Initialism of strategic lawsuit against public participation: a lawsuit or other legal harassment designed to intimidate and silence critics.

plural of SLAPP

(countable) One who, or that which, slaps. / (countable, UK, Ireland, slang) A prostitute. / (countable, UK, Ireland, Australia, slang) A woman of loose morals.

(informal) The practice of physically attacking (originally, slapping), and often verbally abusing, a person and photographing or filming the attack using a camera phone, the recording sometimes being sent to others to further humiliate the victim.

(informal) A person who practises happy slapping.

(surfing) A very small wave.

Alternative spelling of backslapping

(idiomatic) A joke, especially one which strikes the listener or reader as particularly humorous.

plural of happy slapping

plural of happy slapper