Name of cape southwest of Eglarest, also known as Ras Mewrim (WJ/190, WJ/379). The initial element of the name is bâr “home”, the second element is the plural in of the definite article i “the” and the final element is the plural mŷl “gulls”.
Conceptual Development: This name was earlier given as Bar-in-Gwael (WJ/418). In one place it was changed in pencil to Bar-i-Mŷl, a more accurate rendering of the result of nasal-mutation of the plural definite article in before m (WJ/418); hat-tip to Vyacheslav Stepanov for this suggestion.
A word for “gull” in the name S. Bar-in-Mŷl “Home of the Gulls” (WJ/379); its singular and plural forms would be the same. It might be derived from ✱miulē < ᴹ√MIW “whine”, the basis for other “gull” words, since *iu* became *ȳ* in Sindarin. I’d recommend using the better attested S. maew “gull” for purposes of Neo-Sindarin.