round shape

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a shape that is curved and without sharp angles
• Hypernyms:
shape, form
• Hyponyms:
bulb, cone, conoid, cone shape, disk,
disc, saucer, coil, whorl, roll, curl,
curlicue, ringlet, gyre, scroll, whirl, swirl,
vortex, convolution, spheroid, ellipsoid of revolution, sphere, cylinder,
torus, toroid, rim