The Adûnaic name of Eärendil’s ship Vingilótë “Foam-flower”, of the same meaning (S/249). This name appears in earlier writings as Rôthinzil with a long ô (SD/360). Its later form is a violation of the phonetic rules laid out by Tolkien in Lowdham’s Report, which said that the vowels [ē] and [ō] could only be long in Adûnaic (SD/423). The later form could be an Anglicanized or a Westronized form (where a short [o] could appear), or it could indicate that Tolkien changed his mind about Adûnaic phonetic rules. Some linguistic notes from the 1930s suggest Tolkien at one point considered making the name Quenya (P19/49).
rothinzilproper name. Foam flower, Foamflower, Foam-flower