Primitive elvish
kwilit
root. belt, girdle
Quenya
quilta
noun. belt, girdle
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
Early Quenya
qilta
noun. belt, girdle
A noun appearing as ᴱQ. qilta “girdle, belt” in the Qenya Lexicon of the 1910s under the early root ᴱ√QḶTḶ (QL/78). It also appeared with the gloss “belt” in the contemporaneous Poetic and Mythological Words of Eldarissa (PME/78).
Neo-Quenya: For purposes of Neo-Quenya, I would retain ᴺQ. quilta “belt” from a Neo-Root ᴺ√KWILIT, but for “girdle” I would use Q. lesta (WJ/369).