Noun stratagem has 2 senses
  1. ploy, gambit, stratagem - a maneuver in a game or conversation
    --1 is a kind of maneuver, manoeuvre, tactical maneuver, tactical manoeuvre
  2. contrivance, stratagem, dodge - an elaborate or deceitful scheme contrived to deceive or evade; "his testimony was just a contrivance to throw us off the track"
    --2 is a kind of scheme, strategy
    --2 has particulars: plant; pump-and-dump scheme; wangle, wangling
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