ski cap(n = noun.artifact) stocking cap, toboggan cap - a close-fitting woolen cap; often has a tapering tail with a tassel;
is a kind of cap

baseball cap, bathing cap, bishop's cap, blasting cap, cap, cap off, cap opener, cap screw, cervical cap, cloth cap, coonskin cap, cradle cap, death cap, distributor cap, dunce cap, dunce's cap, five-point bishop's cap, flat cap, fool's cap, garrison cap, golf cap, ice cap, inky cap, jockey cap, large cap, lens cap, liberty cap, overseas cap, peaked cap, percussion cap, phrygian cap, radiator cap, root cap, sailor cap, service cap, shaggy cap, shower cap, ski, ski boot, ski conditions, ski jacket, ski jump, ski jumper, ski jumping, ski lift, ski lodge, ski mask, ski parka, ski pole, ski race, ski rack, ski resort, ski run, ski slope, ski tow, ski trail, ski wax, small cap, stocking cap, swimming cap, thinking cap, toboggan cap, watch cap, water ski, wishing cap, yachting cap