to pass or spend (time) idly or frivolously (usually followed by away).
Origin: 1175–1225; (noun) Middle English tru(f)fle idle talk, deceit < Old French, variant of truf(f)e mockery, deceit; (v.) Middle English treoflen to mock < Old French trufler to make sport of
early 13c., trufle "false or idle tale," later "matter of little importance" (late 13c.), from O.Fr. trufle "mockery," dim. of truffe "deception," of uncertain origin. The verb, in the sense of "treat lightly," is first attested 1520s.