From Tolkien Gateway

Falathren is a Sindarin name for Westron. It is derived from the word falas, "shore", as its first speakers settled on the shores of Middle-earth.[1]


  1. J.R.R. Tolkien, Christopher Tolkien (ed.), The Peoples of Middle-earth, "II. The Appendix on Languages", The Languages at the end of the Third Age, p. 32