Wiktionary
candrabindu
n. A diacritic used in the Devanagari ((lang mul sc=Deva ँ)), Bengali ((lang mul sc=Beng ঁ)), Gurmukhi ( (lang mul sc=Guru ਁ)), Gujarati ((lang mul sc=Gujr ઁ)), Oriya ((lang mul sc=Orya ଁ)), and Telugu ((lang mul sc=Telu ఁ)) scripts. It usually indicates that the previous vowel is nasalized. Shown here over the letter "ka" (or in the case of Telugu, after the "ka"):