Bulbous

Etymology
or alteration of bulbosus:

Adjective

 * 1) Having the shape of or resembling a bulb, bloated.
 * 2) One who is overweight and round in shape
 * 3)  Growing from a bulb or producing bulbs.

Thesaurus
bagging, baggy, ballooning, bellying, billowing, billowy, bloated, bosomy, botanic, bulblike, bulbose, bulging, bumped, bumpy, bunched, bunchy, cereal, distended, ellipsoid, farinaceous, fruitlike, fruity, global, globate, globe-shaped, globed, globelike, globoid, globose, globular, hemispheric, herbaceous, herbal, herbose, herbous, herby, hillocky, hummocky, leguminose, leguminous, moutonnee, obovoid, orb, orbed, orbic, orbicular, orbiculate, orblike, orby, ovoid, plantlike, pneumatic, potbellied, pouching, radicated, radiciform, radicular, rhizoid, rootlike, rounded, sphere-shaped, spherelike, spheric, spheriform, spheroid, swelling, tuberous, vegetable, vegetal, vegetarian, vegetational, vegetative, verrucated, verrucose, warty, weedy