preemptor

Noun preemptor has 2 senses

• preemptor(n = noun.person) pre-emptor - someone who acquires land by preemption;
is a kind of appropriator
Derived form verb preempt₁

• preemptor(n = noun.person) pre-emptor - a bidder in bridge who makes a preemptive bid;
is a kind of bidder
Derived form verb preempt₄