DICT.TW Dictionary Taiwan

 stool pigeon
 誘捕用的鴿子,誘餌,密探

 Stool n.
 1. A single seat with three or four legs and without a back, made in various forms for various uses.
 2. A seat used in evacuating the bowels; hence, an evacuation; a discharge from the bowels.
 3. A stool pigeon, or decoy bird. [U. S.]
 4. Naut. A small channel on the side of a vessel, for the dead-eyes of the backstays.
 5. A bishop's seat or see; a bishop-stool.
 6. A bench or form for resting the feet or the knees; a footstool; as, a kneeling stool.
 7. Material, such as oyster shells, spread on the sea bottom for oyster spat to adhere to. [Local, U.S.]
 Stool of a window, or Window stool Arch., the flat piece upon which the window shuts down, and which corresponds to the sill of a door; in the United States, the narrow shelf fitted on the inside against the actual sill upon which the sash descends. This is called a window seat when broad and low enough to be used as a seat.
 Stool of repentance, the cuttystool. [Scot.]
 Stool pigeon, a pigeon used as a decoy to draw others within a net; hence, a person used as a decoy for others.
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 stool pigeon
      n : a dummy pigeon used to decoy others