From Longman Dictionary of Contemporary Englishmuttonmut‧ton /ˈmʌtn/ noun 1 [uncountable]DFF the meat from a sheep → lamb2 → mutton dressed as lamb
Examples from the Corpus
mutton• Veal and mutton too have decreased in per capita consumption during the past five years.• Baked in a kiln at the old corn mill, the filling was made from mutton and fowl.• The novices empty vats of mutton scraps into the dustbins and pack them down with their bare hands.• He had eaten roast mutton and apple charlotte.• He therefore ordered an early dinner of roast mutton to be served in his quarters at three o'clock that afternoon.• Imagine an entire nation of people missing their mutton.• Classifications of sheep are lamb, yearling mutton, and mutton.• Older carcasses are described as lamb, yearling mutton, and mutton.Origin mutton (1200-1300) Old French moton “(male) sheep” 