Ras Mewrim was a headland on the coastline south-west of Eglarest, in the land of the Falas in Beleriand. The name only appears in the later additions to the Second 'Silmarillion' Map.
Bar-in-Mŷl, the "Home of the Gulls", was another name for the headland in the essay "Quendi and Eldar". The name was first typed Bar-in-Gwael, but Tolkien later changed it to Bar-in-Mŷl and added the translation.