Center letter: o
Outer letter: a c j l r u
Answers (32):
  jocular
  arco
  aurora
  auroral
  cacao
  callaloo
  carol
  cloaca
  coal
  coca
  cocoa
  cola
  collar
  color
  cool
  coral
  corolla
  corral
  croc
  curacao
  juror
  local
  loco
  loll
  occur
  ocular
  oracular
  oral
  orca
  roar
  rococo
  roll