Gnomish
loctha-
verb. to curl (tr.), bend, wind, twine, tie knot, tangle
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!
A verb appearing as G. loctha- “curl (tr.), bend, wind, twine, tie knot, tangle” in the Gnomish Lexicon of the 1910s (GL/54), clearly based on the early root ᴱ√LOKO “twine, twist, curl” (QL/55).
Neo-Sindarin: Since √LOK “bend, loop” survived in Tolkien’s later writing, I would retain this word but update it to ᴺS. loetha- “to curl, bend, wind, twine” to better fit Sindarin phonology, dropping the meanings “tie knot, tangle” for which I would use [N.] nod- “tie” and [G.] canga- “tangle”.