The Collaborative International Dictionary of English v.0.48:
Tacker \Tack"er\, n. One who tacks. [1913 Webster]WordNet (r) 3.0 (2006):
tacker n 1: a worker who fastens things by tacking them (as with tacks or by spotwelding) 2: a sewer who fastens a garment with long loose stitches [syn: baster, tacker] 3: a hand-held machine for driving staples home [syn: staple gun, staplegun, tacker]