Definition of well-ribbed in US English:

well-ribbed

adjective

  • Having good or strong ribs. Sometimes: specifically (of a horse or dog) having the posterior ribs coming relatively close to the pelvic bones, regarded as a desirable feature.

Origin

Mid 16th century; earliest use found in Thomas Hill (b. c1528). From well + ribbed.

Pronunciation

well-ribbed

/ˌwɛlˈrɪbd/