Center letter: i
Outer letter: a d l m o r
Answers (47):
  armadillo
  admiral
  aioli
  airmail
  amid
  aria
  arid
  aril
  armorial
  dial
  dildo
  dill
  diorama
  drill
  droid
  idiom
  idol
  imam
  immoral
  laid
  lair
  liar
  lima
  limo
  lira
  maid
  mail
  mailroom
  maim
  malaria
  malarial
  midair
  midi
  mild
  mill
  mirror
  moil
  olio
  radial
  radii
  radio
  raid
  rail
  railroad
  rial
  rill
  roil