(slang, transitive) To mock; to ridicule.

(idiomatic, colloquial) To verbally attack or criticise. / (idiomatic, colloquial) To start to eat something.

(US, law enforcement) Initialism of reduction in pay.

Routing information protocol, a dynamic routing protocol used in local and wide area networks.

(molecular biology) Repeat-induced point mutation, a process by which both copies of duplicated sequences are mutated.

Initialism of requiescat in pace, initialism of requiescant in pace or initialism of rest in peace. / (rare) Initialism of rest in power.

(colloquial, regional, dated) A worthless horse; a nag. / (colloquial, regional, dated) An immoral man; a rake, a scoundrel.

(Scotland) A handful of unthreshed grain.

A tear (in paper, etc.). / A type of strong, rough tide or current.

(transitive) To divide or separate the parts of (especially something flimsy, such as paper or fabric), by cutting or tearing; to tear off or out by violence.