A noun for “claw, talon” appearing rough notes on Elvish Hands, Fingers and Numerals from the late 1960s based on the root √NAP “grasp, seize quickly” (VT47/20). In the margin Tolkien wrote a variant form namma with the same glosses, and the mm was clear despite the implausibility of its derivation from √NAP.
Neo-Quenya: For purposes of Neo-Quenya, I’d stick to nappa.
nappa noun "claw, talon" (also namma) (VT47:20)