DICT.TW Dictionary Taiwan

 plack·et /ˈplækət/
 開口,口袋

 Plack·et n.
 1. A petticoat, esp. an under petticoat; hence, a cant term for a woman. [Obs.]
 2. The opening or slit left in a petticoat or skirt for convenience in putting it on; -- called also placket hole.
 3. A woman's pocket.
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 placket
      n : a piece of cloth sewn under an opening