Monier Monier-Williams, A Sanskrit–English Dictionary
वर्चस्varcasn. (√रुच्) vital power, vigour, energy, activity, (esp.) the illuminating power of fire or the sun i.e.…
neuter gender (√रुच्) vital power, vigour, energy, activity, (especially) the illuminating power of fire or the sun id est brilliance, lustre, light fg-vedaetc.