opener
    n 1: the first event in a series; "she played Chopin for her
         opener"; "the season's opener was a game against the
         Yankees"
    2: a person who unfastens or unwraps or opens; "children are
       talented undoers of their shoelaces" [syn: undoer,
       opener, unfastener, untier]
    3: a hand tool used for opening sealed containers (bottles or
       cans)

Opener \O"pen*er\, n.
   1. One who, or that which, opens. "True opener of my eyes."
      --Milton.
      [1913 Webster]

   2. Specifically: A bottle opener or a can opener; as, you
      need an opener to get the cap off.
      [PJC]