Ogonek

Diacritic in the form of a small curl at the bottom (or rarely the top) of a letter

The ogonek is a diacritic hook placed under the lower right corner of a vowel in the Latin alphabet used in several European languages, and directly under a vowel in several Native American languages. It is also placed on the lower right corner of consonants in some Latin transcriptions of various indigenous languages of the Caucasus mountains.

This keyword could refer to multiple things. Here are some suggestions: