The second son of Minardil, whose son Tarondor laer became the 27th king of Gondor after the previous king and his heirs perished in the great plague (LotR/1038, 1048). The meaning of his name is unclear, but it might be a compound of a shortened form minas of minassë “tower” and the suffixal form -tan of tamo “smith”.
Quenya
Minastan
tower-maker
minastan
masculine name. ?Smith of the Tower
Elements
Word Gloss minassë “fort, city (with a citadel and central watch tower)” tamo “smith, builder”
Minastan masc.name, noun *"Tower-maker" (Appendix A)