task / task/ • n. a piece of work to be done or undertaken.• v. [tr.] (usu. be tasked) assign such a piece of work to: NATO troops are tasked with separating the warring parties. ∎ make great demands on (someone's resources or abilities): it tasked his diplomatic skill to effect his departure in safety.PHRASES: take someone to task reprimand or criticize someone severely for a fault or mistake.