Значение идиомы slap down

[slap down] {v.}, {slang} 1. To stop from doing or saying something, in a rough way orwith a scolding; silence.

When Billy talked back, the teacherslapped him down.

2. To put a quick stop to; refuse roughly.

Theboss slapped down our idea of taking a nap on the job everyafternoon.