skull

n.头骨

skip, skipper, skipping-rope, skirl, skirmish, skirmisher, skirt, skirting-board (Brit) (US `baseboard), skit, skittish, skittishly, skittishness, skittle, skive, skiver, skivvy, Skokie, skua, skulduggery (also skullduggery), skulk, skull and cross-bones, skull-cap, skunk, sky, sky-blue, sky-diver, sky-diving, sky-high, sky-rocket, sky-writing, skylark, skylight, skyline, skyrocket, skyscraper, skywards, slab, slack, slacken, slacker,