Center letter: o
Outer letter: c h i m r u
Answers (30):
  chromium
  choir
  churro
  cocci
  coho
  coir
  comic
  couch
  croc
  croci
  crouch
  curio
  hooch
  horror
  hour
  humor
  ichor
  micro
  mirror
  mochi
  mooch
  moor
  morocco
  mucho
  occur
  ouch
  rococo
  romcom
  room
  rumor