Ŕ (minuscule: ŕ) is a letter of the Lower Sorbian and Slovak alphabets, Ukrainian Latin alphabet and Proto-Turkic orthography. It is formed from R with the addition of an acute. Their Unicode codepoints are U+0154ŔLATIN CAPITAL LETTER R WITH ACUTE (Ŕ) and U+0155ŕLATIN SMALL LETTER R WITH ACUTE (ŕ). The PostScript names are Racute and racute.
In Sabino Arana's orthography[1] of the Basque language, ⟨ŕ⟩ was used for the /r/ contrasting with ⟨r⟩ which was used for /ɾ/.
However, in the standard Basque alphabet, /r/ is represented with ⟨r⟩ in syllable-final positions and ⟨rr⟩ between vowels.
^Lecciones de ortografía del euskera bizkaino, page 32, Arana eta Goiri'tar Sabin, Bilbao, Bizkaya'ren Edestija ta Izkerea Pizkundia, 1896 (Sebastián de Amorrortu).