A word appearing as ᴱQ. lattin or lattulis “window” in the Qenya Lexicon of the 1910s, an elaboration of ᴱQ. lat (latt-) “flap, small hinged door, lid” (QL/51).

Neo-Quenya: Since I retain ᴺQ. lat (latt-) as a derivative of the later root √LAT¹ “open”, I would retain ᴺQ. lattin “window” as well, a word also used in Helge Fauskanger’s Neo-Quenya New Testament (NQNT).