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knock out
Render useless or inoperative, as in The storm knocked out the power .
See knock oneself out .
Make tired, exhaust, as in That sightseeing tour knocked me out .
See knock off , def. 2.
Also, knock out cold . Render unconscious by a blow or some other means. For example, It was just a swinging door, but it knocked her out , or Just one of those sleeping pills can knock you out cold . [Late 1500s]
Example Sentences
M&S has not said what or who knocked out its online ordering systems, paused deliveries and left empty shelves in stores.
When a massive storm knocked out power and sent the world outside into a flickering haze of uncertainty 鈥 no streetlights, no signal, no safety net 鈥 James was there.
After grabbing the girl he put his hand into her mouth to muffle her screams with enough force to knock out a tooth.
Last week the club knocked out Orange County SC, a perennial playoff team in the second-tier USL Championship, from the U.S.
The winner will face Lei Peifan, who knocked out defending champion Wilson on Saturday, in the last 16.
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