dust coat(n = noun.artifact) duster, gabardine, gaberdine, smock - a loose coverall (coat or frock) reaching down to the ankles;
is a kind of coverall

angel dust, bite the dust, box coat, brunch coat, chalk dust, choroid coat, coat, coat button, coat closet, coat hanger, coat of arms, coat of mail, coat of paint, coat rack, coat stand, coat tree, copple dust, cosmic dust, diamond dust, duffel coat, duffle coat, dust, dust bag, dust bowl, dust cloud, dust contamination, dust cover, dust devil, dust jacket, dust mop, dust sheet, dust storm, dust wrapper, finish coat, finishing coat, flat coat, frock coat, fur coat, gold dust, hell dust, hooded coat, interplanetary dust, joseph's coat, lab coat, laboratory coat, mackinaw coat, mink coat, morning coat, pea coat, primer coat, priming coat, radioactive dust, sable coat, sack coat, sclerotic coat, scratch coat, seed coat, sheepskin coat, sport coat, sports coat, swallow-tailed coat, tail coat, trench coat, tuxedo coat