Quenya 

rúna-

verb. to free

rúna-

[to] free

rúna- vb. "[to] free" (VT43:23). Compare eterúna-, etrúna-, q.v. It is not quite clear whether rúna by itself is an adjective or a verb; the gloss "free" makes room for both interpretations. If #runando "redeemer" (q.v.) is formed from this noun, it would cover "to redeem" as well.