Center letter: e
Outer letter: h l n o u c
Answers (39):
  luncheon
  cell
  cello
  cellule
  clench
  cloche
  clone
  clue
  colleen
  colonel
  cone
  coulee
  echelon
  echo
  eunuch
  heel
  hell
  hellhole
  hello
  hence
  hole
  hone
  lech
  leech
  lone
  louche
  lune
  nene
  neocon
  neon
  noel
  nonce
  none
  nucleon
  oleo
  once
  ounce
  uncle
  unclench