ton ‧ sil /ˈtɒns ə l $ ˈtɑːn-/ BrE AmE noun [countable]
[ Date: 1500-1600 ; Language: Latin ; Origin: tonsillae 'tonsils' ]
your tonsils are the two small round pieces of flesh at the sides of your throat:
If you keep getting throat infections you might have to have your tonsils out (=have them removed) .