wampum

n [U] ornaments made of shells threaded on a string like beads, used formerly by N American Indians as money 贝壳串珠（装饰品, 旧时北美印第安人用作货币）.

Walkman, walkway, wall, Wall Street, wall-eyed, wall-painting, wall-to-wall, wallaby, wallah, wallet, wallflower, wallop, walloping, wallow, wallpaper, wally, walnut, walrus, walrus moustache, waltz, wan, wand, wander, wander about, wanderer, wandering, wanderings, wanderlust, wane, wangle, wank, wanker, wanly, wanna, wanness, want, want to know (about sth), wanted, wanting, wanton,