Gnomish
thol-
verb. to roll
-thol Reconstructed
suffix. adjective suffix
-(i)ol
suffix. adjective suffix
-(r)in
suffix. adjective suffix
-r(i)ol
suffix. adjective suffix
-ra
suffix. adjective suffix
-wed
suffix. adjective suffix
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 verb in the Gnomish Lexicon of the 1910s appearing as G. thol- {“roll. tr. & intr.” >>} “roll” (GL/73). It could be based on some variant ✱ᴱ√ÞOL of the early root ᴱ√TOL+U from the contemporaneous Qenya Lexicon which had derivatives like ᴱQ. tolu- “roll up, furl” (QL/94).
Neo-Sindarin: Since we have no later words for “roll”, I would retain ᴺS. thol- “to roll” for purposes of Neo-Sindarin based on a (Sindarin-only) Neo-Root ✱√THOL. That conflicts from 1964 S. thôl “helmet” which is also derived from √THOL (PE17/188), but in 1957 Tolkien derived this helmet word from √STOL instead (PE17/186), leaving room for ᴺS. thol- “roll”.