Where does “raaj” come from?

raaj (Proto-Mon-Khmer) comes from Sanskrit रज्जु, from Proto-Indo-Aryan ráźȷ́uṣ, from Proto-Indo-Iranian rázǰuš, from Proto-Indo-European résg-u-s.

Ancestry of “raaj”, step by step

StepLanguageWordMeaning
1Sanskritरज्जुa rope, cord, string
2Proto-Indo-Aryanráźȷ́uṣ—
3Proto-Indo-Iranianrázǰuš—
4Proto-Indo-Europeanrésg-u-s—
Every word from Proto-Indo-European résg-u-s →Every word from Proto-Indo-Iranian rázǰuš →Every word from Proto-Indo-Aryan ráźȷ́uṣ →