skein

n 1 length of wool, thread, etc wound into a loose coil （纱、 线等的）一束. 2 group of wild geese, etc in flight （飞行中的）一群（大雁等）.

sixth, sixth-former, sixthly, sixtieth, sixty, sizable, size, size up, sizeable (also sizable), sizing, sizzle, sizzler, skate, skateboard, skateboarder, skateboarding, skater, skating, skating-rink, skedaddle, skeleton, skeleton key, skeptic, skeptical, skepticism, sketch, sketch out, sketch-book, `sketch-pad, sketch-map, sketchily, sketchiness, sketchy, skew, skew-whiff, skewbald, skewer, ski, ski-bob, ski-jump, ski-lift,