Center letter: a
Outer letter: b i l m o x
Answers (46):
  mailbox
  abloom
  aboil
  aioli
  alibi
  ammo
  axial
  axilla
  axiom
  baba
  bail
  ball
  balm
  bamboo
  baobab
  biaxial
  bilabial
  blab
  blam
  boba
  bola
  iamb
  iambi
  imam
  labia
  labial
  lama
  lamb
  lima
  llama
  loam
  mail
  maim
  mall
  mama
  mamba
  mambo
  mamma
  mammal
  maxi
  maxilla
  maxim
  maxima
  maximal
  momma
  moola