palatal hook

noun3

1. •
   A small hook for attaching elastic bands on the internal side of braces fixed to the upper teeth.
2. •
   A hamiform diacritic ⟨◌̡⟩ formerly used to mark consonantal palatalisation; superseded by the superscript jay ⟨◌ʲ⟩.
3. •
   (rare) = háček (when it takes the form of a prime)

   • In the Zographensis one finds pьřěaxǫ (John 6:52). Here the liquid is marked with the palatal hook. — 1962