spume

n [U] (arch 古) foam; froth 泡沫.

springtide, springtime, springy, sprinkle, sprinkler, sprinkling, sprint, sprinter, sprite, sprocket, sprout, spruce, sprucely, spruceness, sprung, spry, spryly, spryness, spud, spud-bashing, spun, spun glass, spun silk, spun sugar, spunk, spunky, spur, spurious, spuriously, spuriousness, spurn, spurt, sputnik, sputter, sputum, spy, spy-glass, spyglass, Sq, Sqn Ldr,