Center letter: r
Outer letter: i m n o p t
Answers (56):
  promotion
  import
  imprint
  intro
  iron
  minor
  mirin
  mirror
  monitor
  moor
  morn
  moron
  motor
  nitro
  noir
  nori
  norm
  poor
  porn
  porno
  port
  portion
  prim
  primo
  primp
  print
  prion
  prior
  prom
  promo
  prompt
  pronto
  prop
  proportion
  proton
  riot
  romp
  room
  root
  roti
  rotini
  rotor
  tori
  torii
  torn
  toro
  torpor
  tort
  tortoni
  trim
  trio
  trip
  triton
  tromp
  troop
  trot