Ogonek

The ogonek (/əˈɡɒnɛk, -ək/; Polish: [ɔˈɡɔnɛk], "little tail", diminutive of ogon) 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.

An ogonek can also be attached to the bottom of a vowel in Old Norse–Icelandic to show length or vowel affection. For example, in Old Norse, ǫ represents the Old Norwegian vowel [ɔ], which in Old Icelandic merges with ø ‹ö› and in modern Scandinavian languages is represented by the letter å.