▪ Accord. to Asbaghi1988 from Pers kārwānak.1 ▪ According to Ḍinnāwī2004 and Rolland2014, who also think the word is of Pers origin, the etymon is Pers kerwān. Rolland2014 would not exclude the inverse, though, i.e., Ar > Pers. ▪ …
1. Following Moḥammad Ḥoseyn Ḫalaf Tabrizi Borhān, Borhān Qāṭeʕ (Dictionnaire de la langue Persane), ed. Moḥammad Moʕin, 5 vols., Teheran 1964.
For other values attached to the root, cf. ↗kuraẗ, ↗karā/à (√KRW/Y), and ↗karawyā (√KRWYā), as well as, for the overall picture, root entry ↗KRW. – Cf. also ↗KRː (KRR), ↗KRKR, ↗KRW/Y, and ↗KRY.