Rahu=राहु: "From Sanskrit root रभ्, from Proto-Indo-European *gʰrebʰ (“to seize, snatch, grab”, compare Sanskrit गृह्णाति (gṛhṇā́ti), गृभ्णाति)"
en.wiktionary.org/wiki/%E0%A4%B0…
TBH I have a soft spot for the deliciously crunchy greek terms for the nodes, anabibazon (αναβιβάζων) and catabibazon (καταβιβάζων)
Rahu, Ketu, along with the 7 classical planets and 2 other points, Yuebei 月孛 and Ziqi紫氣, are the planets the Chinese astrologers used.