ɼ

Symbol

 * 1)  voiced alveolar fricative trill, such as Czech $⟨ř⟩$;

Usage notes
This retired symbol had been adopted specifically to transcribe Czech $⟨ř⟩$. This is a rare sound, found in very few other languages.

Letter

 * 1)  romanization of the trill $⟨റ⟩$