Gnomish
uthwen
noun. escape, way out, exit
bad uthwen
place name. Way of Escape
taleg uthwen
place name. Way of Escape
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 appearing as G. uthwen “way out, exit; escape” in the Gnomish Lexicon of the 1910s related to the verb G. uthra- “get away, escape” (GL/75), both clearly based on the early root ᴱ√USU “get out, escape” (QL/98).
Neo-Sindarin: For purposes of Neo-Sindarin, I would retain this noun as ᴺS. uthwen “way out, exit; escape”, but re-etymologized as a combination of the Neo-Root ᴺ√UTH “escape” with men “way”, with thm > thw and then the u preserved by the following w.