A root in the Qenya Lexicon of the 1910s glossed “wolf”, with derivatives like ᴱQ. ulku and G. ulug of the same meaning (QL/97). In the contemporaneous Gnomish Lexicon Tolkien first gave G. ulug “wolf”, but this word’s gloss was revised to “dragon” as a cognate to ᴱQ. lōke (GL/74), and Tolkien added a new word G. urc “wolf” as an equivalent to harw. None of the later Elvish “wolf” words resemble either √ULUK- or √URUK-.
Early Primitive Elvish
ara
root. (be) dry
ara
root. spread, extend sideways
araka
noun. shingle, piles of stones
ʒara
root. spread, extend sideways; wide places
swandǝ
noun. dog
uluku
root. wolf
A root in the Qenya Lexicon of the 1910s meaning “(be) dry” (QL/32). Given the many uses to which √AR was put later, it is unlikely this sense remained valid in Tolkien’s later writing; the later root ᴹ√PARAK and its derivatives is probably better for the purposes of Neo-Eldarin writing.