1Baseball An act of catching a runner off base, involving a sudden throw of the ball to that base by the pitcher or catcher.
〔棒球〕（投手或传手对跑垒员的）突然传杀
as modifiera pickoff play
Example sentencesExamples
No major league pitcher, to our knowledge. has ever matched his feat of retiring three runners on pickoff throws in one inning
Every inning seemed to feature runners on base, full counts, pickoff throws, pitching changes, and breaks to go wake up spectators who may have dozed off.
But then he made a crucial mistake, making a wide pickoff throw to first base.
When a runner gets on second against the Cubs, pitchers often use a ‘no-look’ sign and attempt a pickoff throw.
The pitcher throws to first base on a pickoff attempt.
2A device in the control or guidance system of an aircraft or boat which emits or alters an electrical, optical, or pneumatic output in response to a change in motion.
传感器，敏感元件
Example sentencesExamples
However, newer systems have a pickoff located directly on the drive shaft, which makes optical devices less practical.
The generating voltmeter and capacitor pickoff signal were quiet.
Definition of pickoff in US English:
pickoff
nounˈpikˌäf
Baseball
The putout of a runner leading off base, involving an unexpected throw to a base by the pitcher or the catcher while the batter is still at bat.
〔棒球〕（投手或传手对跑垒员的）突然传杀
Example sentencesExamples
Every inning seemed to feature runners on base, full counts, pickoff throws, pitching changes, and breaks to go wake up spectators who may have dozed off.
When a runner gets on second against the Cubs, pitchers often use a ‘no-look’ sign and attempt a pickoff throw.
No major league pitcher, to our knowledge. has ever matched his feat of retiring three runners on pickoff throws in one inning
But then he made a crucial mistake, making a wide pickoff throw to first base.
The pitcher throws to first base on a pickoff attempt.