ᴱ√PUÐU root. “consume by fire”
A root in the Qenya Lexicon of the 1910s given as ᴱ√PUŘU [PUÐU] “consume by fire” with derivatives like ᴱQ. pur “a fire, an artificial fire”, ᴱQ. purin “hearth” and ᴱQ. purya- “set fire to” (QL/75). There are no obvious derivatives in the contemporaneous Gnomish Lexicon (G. pruin “charcoal” might be related), but in Gnomish Lexicon Slips modifying that document, primitive G. bordd “fireplace” is compared to ✶búrı̯ā > ᴱQ. purya and seems to be derived from this root or a variant of it (PE13/116). It hints that the root might have been revised to *ᴱ√BUÐU or even ᴱ√BURU. After the 1910s, there are no signs of this root in Tolkien’s writing.
Reference ✧ QL/75 ✧ PUŘU “consume by fire”