ಬಿಲ್ಲು (Kannada) comes from Kannada ಬಲ, from Sanskrit बल, from Proto-Indo-Aryan bálas, from Proto-Indo-Iranian bálas, from Proto-Indo-European bel- — to dig, cut off?; strong; power, strength.
ಬಿಲ್ಲು (Kannada): a bow