su ‧ et /ˈsuːət, ˈsuːɪt, ˈsjuːət $ ˈsuː-/ BrE AmE noun [uncountable]
[ Date: 1300-1400 ; Origin: From an unrecorded Anglo-French sewet , from sue , from Latin sebum 'tallow, suet' ]
hard fat from around an animal’s ↑ kidney s , used in cooking in Britain