A noun for “wolf” in the Gnomish Lexicon of the 1910s (GL/75), likely related to ᴱQ. ulku “wolf” from the contemporaneous Qenya Lexicon derived from the early root ᴱ√ULUKU (QL/97). In the Qenya Lexicon Tolkien gave the Gnomish form as ulug, but in the Gnomish Lexicon the gloss of G. ulug was changed {“wolf” >>} “dragon” (GL/74).
Gnomish
drog
noun. slave, thrall, servant
drogla
noun. cart
drogwed
adjective. servile, slavish; base, mean
drogod
noun. slavery, bondage, thraldom
drogol
adjective. servile, slavish; base, mean
drogwin
noun. slave woman
guinir
noun. slave
harog
noun. wolf
harw
noun. wolf
ulug
noun. wolf
urc
noun. wolf
A word appearing as G. drogla “cart” in the Gnomish Lexicon with cognate ᴱQ. norolle (GL/31), and thus based on the early root ᴱ√NORO “run, go smoothly, ride, spin, etc.” (QL/67).
Neo-Sindarin: The root √NOR was associated with both “run” and “roll” as late as 1948 (PE22/127), so I would retain this word but adapt it as ᴺS. drogol “cart” for purposes of Neo-Sindarin. For a similar development, compare N. draug “wolf” < ᴹ✶d’rāk based on ᴹ√DARAK (Ety/DARÁK), but in the case of ✱n’rok-lǝ there is the additional sound change of initial nr- becoming dr-.