"The term 'glen,' a Gaelic word that means 'narrow valley,' is not specifically included in that protection."<p>Well, the Scottish Gaelic word is actually gleann, and glen in Manx (a Gaelic language) actually means clean. Glen is an English borrowing of a generally Celtic word (compare Welsh glyn and Cornish glynn; both Brythonic languages, not Gaelic). In fact, the only modern Celtic language where the word is spelled glen is Breton, which is spoken in France.