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 √LAT “open”, I would retain ᴺQ. lattin “window” as well, a word also used in Helge Fauskanger’s NQNT (NQNT).
A word appearing as ᴱQ. lat (latt-) “flap, small hinged door, lid” in the Qenya Lexicon of the 1910s, which Tolkien considered deriving from the early root ᴱ√LAPA “enfold” (QL/51).
Neo-Quenya: For purposes of Neo-Quenya, I think this word can be salvaged as ᴺQ. lat (latt-) derived from the later root √LAT “open”, perhaps from primitive lattă with an original sense “opening”.