So in Urdu language there is no word starting with Ṛe "ڑ" IPA /ɽ/ but I think there may be some words in another language that begins with Ṛe "ڑ" or have similar sound.
In Pashto (Indo-Iranian), the word for ‘blind’ does begin with /ɽ/ and is also written with ‘ڑ’ in some scripts, though most widely accepted scripts use ړ.
- blind: [ɽʉ̃n] (it's also pronounced with [ɻ])
In Sindhi & Shina Abjad, it is written as
ڙ. Example: ڙک
Shahmukhi also has
ڑ same as in Urdu, similarly but do not have words starting with that phoneme.
In general, most Indo-Iranian languages do not have words that begin with /ɽ/. Just like Urdu, the corresponding phoneme in Hindi (Devanagari
ड़) is not used to start any word.