Center letter: b
Outer letter: e i k l m o
Answers (37):
  bookmobile
  belie
  bell
  belle
  bible
  bike
  bile
  bilk
  bill
  biome
  blob
  bloke
  bloom
  bobble
  boil
  boll
  bolo
  bomb
  bombe
  boob
  booboo
  book
  bookie
  boom
  emblem
  imbibe
  immobile
  kibble
  libel
  libelee
  limb
  limbo
  lobe
  lobo
  lookbook
  mobile
  oboe