Quenya 

Minardil

minar[?]-friend

Minardil masc.name noun "minar[?]-friend". Perhaps minar is to be understood as a variant of minas (s being voiced to z by contact with the voiced plosive that follows, and then regularly becoming r); if so, the name means "Tower-friend" (Appendix A)

minardil

masculine name. ?Friend of the Tower

25th king of Gondor (LotR/1038). The final element might be -(n)dil “-friend”, but the meaning of the initial element is unclear. There is possibility that it is a shortened form minas of minassë “tower”, possibly also appearing in the name of his son Minastan. In the phonetic development of Quenya, [[p|[s] before [d] would have been voiced to [z]]] which would then have developed into [r].

Elements

WordGloss
minassë“fort, city (with a citadel and central watch tower)”
-(n)dil“-friend, -lover; devotion, disinterested love”
Quenya [LotRI/Minardil; PMI/Minardil; UTI/Minardil] Group: Eldamo. Published by