ca (Pali) comes from Pali assa, from Sanskrit अश्व, from Proto-Indo-Aryan Háśwas, from Proto-Indo-Iranian Háćwas, from Proto-Indo-European h₁éḱwos, from Proto-Indo-European h₁oh₁ḱu- — swift.
ca (Pali): and
Definitions
and
Ancestry of “ca”, step by step
ca traces back through two separate lines of ancestry.