Center letter: r
Outer letter: a i l m n o
Answers (50):
  manorial
  monorail
  airmail
  airman
  alarm
  amoral
  aria
  aril
  armor
  armorial
  aroma
  immoral
  iron
  ironman
  lair
  liar
  lira
  mailroom
  malaria
  malarial
  manor
  marina
  marinara
  marlin
  marm
  maroon
  minor
  mirin
  mirror
  molar
  moor
  moral
  morn
  moron
  noir
  nori
  norm
  normal
  oral
  rail
  rain
  rani
  rial
  rill
  roam
  roan
  roar
  roil
  roll
  room