Noun preemptor has 2 senses
  1. preemptor, pre-emptor - someone who acquires land by preemption
    --1 is a kind of appropriator
    Derived form: verb preempt1
  2. preemptor, pre-emptor - a bidder in bridge who makes a preemptive bid
    --2 is a kind of bidder
    Derived form: verb preempt2
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