from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. : A hook-shaped diacritical mark attached underneath a vowel, typically to indicate nasalization, as in Ąą, Ęę, Įį, Ǫǫ or Ųų.
In 1979, however, two things happened almost simultaneously – a Polish Pope was elected: John Paul II, whose Polish family name included the barred l – Wojtyła, and the Solidarity movement was constantly in the news, led by a man whose name not only included a barred l, but also an ogonek reverse cedilla under a vowel letter, indicating that it is a nasalised vowel: Lech Wałęsa.
Note that the Kazakh-Cyrillic alphabet has two k's, one identical to the Russian k, the other a k with a cédille/ogonek.
The name of Czech composer František Ignác Antonín Tůma (1704-1774) makes one immediately think, "What, no umlaut, macron, or ogonek?"
(like ogonek, cyracc) and possibly some indirectly necessary things that you'll probably know about them if you use them.