worm-cast

n small tubular pile of earth that is pushed up to the surface of the ground by an earthworm 蚯蚓粪.

workplace, works, works' canteen, worksheet, workshop, workstation, world, world power, world war, world without end, world-beater, world-class, world-famous, world-weary, world-wide, worldliness, worldly, worldly-wise, worldwide, worm, worm-hole, wormeaten, wormwood, wormy, worn, worn-out, worried, worriedly, worrier, worrisome, worry, worry about, worrying, worse, worse off, worsen, worship, worshipful, worst, worsted,