ad ‧ e ‧ noids /ˈædənɔɪdz, ˈædɪnɔɪdz, ˈæd ə n-/ BrE AmE noun [plural]
[ Date: 1800-1900 ; Language: Greek ; Origin: adenoeides , from aden 'gland' ]
the small soft pieces of flesh at the top of your throat, behind your nose, that sometimes become swollen