also big-hitter
( big hitters)
1.
A big hitter is a sportsperson such as a golfer or tennis player who hits the ball with a lot of force.
The Uruguayan-born big-hitter smashed 28 aces.
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2.
A big hitter is a powerful or influential person, especially in business or politics. ( INFORMAL )
...if Tony Blair fails to persuade a Cabinet big hitter to take on the job.
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