(firearms) A trigger mechanism requiring a single pull to both cock and fire.

plural of active galactic nucleus

(astronomy) A compact region at the center of a galaxy that has a much higher than normal luminosity over at least some portion, and possibly all, of the electromagnetic spectrum.

A female character actor.

plural of active power

plural of activity trap

plural of activist judge

(US, derogatory, chiefly in right-wing discourse) A judge or justice who makes rulings based on personal political views or considerations rather than on the law, or who issues rulings intended to have political effects.

(programming) a data structure containing subroutine state information located on the call stack

(slang) To succeed at seducing another person into sexual activity.