A verb in the Qenya Lexicon of the 1910s glossed “kindle” with variants tunda- and turu- (the latter marked † as archaic), appearing under the early root ᴱ√TUŘU [TUÐU] of the same meaning (QL/96).
Early Quenya
turu-
verb. can, to be able
turu-
verb. to kindle
turu
noun. wood (as material), (orig.) firewood
tunda-
verb. to kindle
aldare
noun. wood
A word glossed “wood” in the margins of Tolkien’s notes on The Creatures of the Earth from the 1910s, clearly an elaboration ᴱQ. alda “tree” as suggested by Patrick Wynne and Christopher Gilson (PE14/7).
turuksa
adjective. wooden
turúva
adjective. wooden
An adjective for “wooden” in the Qenya Lexicon of the 1910s derived from the root ᴱ√TUŘU [TUÐU], also with a variant form turuksa (QL/96). It also appeared in Early Qenya Word-lists of the 1920s (PE16/139).
A noun in the Qenya Lexicon of the 1910s appearing as ᴱQ. turu and described as “properly = firewood - but used of wood in general as a material”, a derivative from the root ᴱ√TUŘU [TUÐU] (QL/96). It also appeared in the contemporaneous Poetic and Mythological Words of Eldarissa with the gloss “wood (material)” (PME/96) and appeared again as turu “wood” in Early Qenya Word-lists of the 1920s (PE16/139). It appeared once more many years later as an element in the name Turuphanto “Wooden-whale” (UT/191), and so may remain viable in Tolkien’s later conception of the language.
Neo-Quenya: For purposes of Neo-Quenya, I think it is preferable to use the word Q. töa for “wood (material)”.