Quenya 

maina

noun. thing of excellence, treasure

A noun for “a thing of excellence, a treasure”, equivalent to Old English máþum of similar meaning, appearing in Definitive Linguistic Notes (DLN) from 1959 and based on the root √MAY “excellent, admirable” (PE17/163). There was a faint letter written over the n, possibly k according to Christopher Gilson and thus indicating a revision to maika, but its Sindarin cognate S. maen “a treasure” was not altered.