Rajah \Ra"jah\ (r[aum]"j[aum] or r[=a]"j[.a]), n. [Hind. r[=a]j[=a], Skr. r[=a]jan, akin to L. rex, regis. See {Regal}, a.] A native prince or king; also, a landholder or person of importance in the agricultural districts. [India]
It wasn't until 1841, when Sir James Brooke arrived in Sarawak as the first white rajah, that headhunting was outlawed.