U+0691 "ڑ" Arabic Letter Rreh Unicode Character

U+0691 "ڑ" Arabic Letter Rreh is a specific letter used in the Urdu and Punjabi scripts, among other languages, to represent a retroflex flap or tap sound, which is distinct from the standard Arabic "ر" (ra). This character is formed by adding a small diacritical mark, resembling a dot or inverted arc, below the basic rāʾ shape, and it is encoded in Unicode specifically to support the phonetic needs of languages influenced by the South Asian linguistic area. In written Urdu, it appears in words like "بڑا" (baṛā, meaning big) and is essential for accurate pronunciation and semantics, as it contrasts with other "r" sounds in the language's phonemic inventory.