lock·et /ˈlɑkət/
  小盒;紀念品盒
  Lock·et n.
  1. A small lock; a catch or spring to fasten a necklace or other ornament.
  2. A little case for holding a miniature picture or lock of hair, usually suspended from a necklace or watch chain.
  ◄ ►
  locket
       n : a small ornamental case; usually contains a picture or a
           lock of hair and is worn on a necklace