Center letter: a
Outer letter: c h l n o y
Answers (58):
  halcyon
  achoo
  achy
  ahoy
  alcohol
  allay
  alloy
  ally
  aloha
  anal
  anally
  ancho
  annal
  annoy
  anon
  anyhoo
  cacao
  call
  calla
  callaloo
  canal
  cancan
  canna
  cannon
  canny
  canola
  canon
  canyon
  challah
  chancy
  clan
  clay
  cloaca
  coach
  coal
  coca
  cocoa
  cola
  colcannon
  cyan
  halal
  hall
  halo
  lacy
  llano
  loach
  loan
  local
  locally
  loyal
  loyally
  naan
  nacho
  nana
  nanny
  nonlocal
  onlay
  yahoo