Center letter: n
Outer letter: a c e h k m
Answers (29):
  namecheck
  acne
  amen
  ankh
  cancan
  cane
  canna
  chance
  enema
  enhance
  hank
  hence
  henchman
  henchmen
  henna
  keen
  khan
  knack
  knee
  mane
  manna
  mean
  menace
  naan
  name
  nana
  nankeen
  neck
  nene