Center letter: o
Outer letter: r a g h l m
Answers (40):
  hologram
  agog
  agora
  aloha
  ammo
  amoral
  armor
  aroma
  glamor
  glom
  gloom
  goal
  googol
  grog
  groom
  halo
  hoar
  hoorah
  hora
  horror
  largo
  loam
  logo
  logogram
  logroll
  loll
  loom
  mammogram
  molar
  moll
  momma
  moola
  moolah
  moor
  moral
  oral
  roam
  roar
  roll
  room