Entry 1 sense Webster, 1913 Fubby · Fub·by · IPA 01 a. Plump; chubby; short and stuffy; as a fubsy sofa. 1. Plump; chubby; short and stuffy; as a fubsy sofa.[Eng.] “A fubsy, good-humored, silly . . . old maid.” — Mme. D'Arblay.