Definition of well-fatted in US English:

well-fatted

adjective

  • Of an animal raised as livestock: thoroughly fattened up; (also of meat) containing plenty of fat.

Origin

Mid 16th century; earliest use found in John Palsgrave (d. 1554), teacher and scholar of languages. From well + fatted.

Pronunciation

well-fatted

/ˌwɛlˈfatɪd/