A noun in the Qenya Lexicon of the 1910s gloss “joint” under the early root ᴱ√LEQE (QL/53).
Early Quenya
oksa
noun. joint
leqet
noun. joint
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!
The word ᴱQ. oksa “joint” appeared in the Qenya Lexicon of the 1910s under the early root ᴱ√OSO whose other derivative was ᴱQ. oswe “hip” (QL/71).
Neo-Quenya: I’d retain the word ᴺQ. oxa “joint” for purposes of Neo-Quenya, but would not derive it from √OS any longer. I would assume it is derived from a Neo-Root ᴺ√OTH, a variant of ᴹ√OS “round” perhaps originally referring to the round joint. Compare Q. ruxa < RUTH + kā ( PE17/188).