Center letter: i
Outer letter: l n o t b h
Answers (34):
  billionth
  bill
  billion
  biotin
  blin
  blini
  bobbin
  boil
  bonito
  hill
  hilt
  hint
  hobbit
  inhibit
  inhibition
  into
  lilt
  lint
  lion
  litho
  loin
  lotion
  ninth
  nonillion
  notion
  obit
  olio
  onion
  thin
  till
  tilt
  tilth
  tint
  toil