岩室 is read as いわむろ (iwamuro) and means cave.
いわむろ
iwamuro
がんえん
halite
いわ
anchor
いわや
cavern
いわま
among rocks
いわやま
rocky mountain
がんせき
rock
いわば
rocky area
いわと
rock door (to a cave)
いわはだ
bare rock
いわてけんりつだいがく
Iwate Prefectural University
いわてだいがく
Iwate University
いわていかだいがく
Iwate Medical University