Center letter: o
Outer letter: d g h i l r
Answers (32):
  girlhood
  dildo
  dodo
  doggo
  doll
  dolor
  door
  droid
  droll
  drool
  gigolo
  gold
  good
  googol
  grog
  hold
  hood
  hoodoo
  horrid
  horror
  idol
  igloo
  logo
  logroll
  loll
  lord
  odor
  olio
  rigor
  roil
  roll
  rood