U+09BC "়" Bengali Sign Nukta Unicode Character

U+09BC "়" Bengali Sign Nukta is a combining diacritical mark used in the Bengali script to modify the pronunciation of the base consonant it attaches to, typically indicating a sound borrowed from another language, such as from Persian, Arabic, or English, that does not exist in standard Bengali phonology. It appears as a dot placed below the consonant, and its primary function is to create new characters by altering the inherent sound, for example converting a dental consonant into a retroflex or a voiced stop into a fricative. This nukta is essential for accurately representing loanwords and certain indigenous words in the Bengali and Assamese writing systems.