Sky or Ocean?

Just saw today's APOD. It is a panoramic view from the top of Mt. Everest. The explanation accompanying the pic says that the local name of Everest - Sagarmatha - actually means "forehead of the sky" in Nepalese language. Does anyone know if this is right? Because in Hindi "Sagarmatha" would mean "forehead of the ocean/sea". I think it is unlikely that "Sagar" means sky in nepalese when it actually means ocean/sea in hindi.