[Hindi rāytā, from Sanskrit *rājikātiktakaḥ, mustard pickle : rājikā, black mustard (probably from rājiḥ, streak, line, from ṛjyati, he stretches out; see reg- in the Appendix of Indo-European roots) + tiktaka-, bitter (from tikta-, past participle of tejate, it is sharp; see steig- in the Appendix of Indo-European roots).]