TUBBY
dumpy, podgy, pudgy, tubby, roly-poly
(adjective) short and plump
Source: WordNet® 3.1
Etymology
Adjective
tubby (comparative tubbier, superlative tubbiest)
stout, rotund
Resembling a tub; sounding dull and without resonance or freedom of sound.
Noun
tubby (plural tubbies)
(pejorative, slang, often used teasingly) An overweight person.
Source: Wiktionary
Tub"by, a.
Definition: Resembling a tub; specifically sounding dull and without
resonance, like a tub; wanting elasticity or freedom of sound; as, a
tubby violin.
Source: Webster’s Unabridged Dictionary 1913 Edition