Same word as nark:

allurement, attraction, beard, blind, blow off, booster, camouflage, catch, chicane, chicanery, come-on, deception, drawing card, ensnarement, enticement, facade, fake, front, imitation, inducement, inveiglement, lure, nark, plant, pretense, seducement, shill, sitting duck, snare, stick, stool pigeon, stoolie, temptation, trick, trickery