Er_with_caron
Er with caron
Cyrillic letter used for /r̥/ in Nivkh
Er with caron (Р̌ р̌; italics: Р̌ р̌) is a letter of the Cyrillic script.
Er with caron is used in the Nivkh language, where it represents the voiceless alveolar trill /r̥/, like the Welsh rh.
It was also used in Polish Cyrillic, corresponding to the digraph Rz.[1]