mutton
mut‧ton /ˈmʌtn/
noun
2. mutton dressed as lamb British English used to describe, in a disapproving way, someone who is wearing clothes that are usually worn by younger people
mut‧ton /ˈmʌtn/
noun Date: 1200-1300
Language: Old French
Origin: moton '(male) sheep'
1. [uncountable] the meat from a sheep ⇨ lambLanguage: Old French
Origin: moton '(male) sheep'
2. mutton dressed as lamb British English used to describe, in a disapproving way, someone who is wearing clothes that are usually worn by younger people