Gnomish
lust
noun. weather; tide; time
aluin
masculine name. Time
lûm
noun. time
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 noun in the Gnomish Lexicon of the 1910s said to be the equivalent of G. lûm [“time”] or G. olod [“tide”] as well as having the sense “weather” (GL/55). It was probably based on the early root ᴱ√LUHU which had various time-related derivatives (QL/56), since in GL is was grouped with other time-words.