Early Quenya
lat
noun. flap, small hinged door, lid
furu
noun. lie
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
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”.