five-second rule
существительное
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Any rule that allows or prohibits certain behavior for five seconds after some event, especially:
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(informal) The belief that food dropped on the ground may safely be eaten provided it is picked up within five seconds of touching the ground.
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(basketball) A rule that a closely-guarded player cannot hold the ball for more than five seconds without dribbling, passing, rolling, or shooting the ball.
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(basketball) A rule that a player who throws in the ball from out of bounds must get rid of it in less than five seconds.
