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coach (someone) for (something)
To help someone to prepare for something. My daughter struggles with public speaking, so I coached her for the debate.
See also: coach
drive a coach and horses through (something)
To expose the flaws in something, such as a statement, argument, or belief. Primarily heard in UK. The suspect had said he wasn't there that night but then drove a coach and horses through that idea with today's contradictory statement.
coach someone for something
to train or drill someone in preparation for doing something. Elliott coached his roommate every night for the contest. Juan coached Alice for the play.
See also: coach
drive a coach and horses through something
Fig. to expose weak points or "holes" in an argument, alibi, or criminal case by [figuratively] driving a horse and carriage through them. (Formal. Emphasizes the large size of the holes or gaps in the argument.) The barrister drove a horse and carnage through the witness's testimony. The opposition will drive a coach and horses through the wording of that government bill.
drive a coach and horses through somethingmainly BRITISH
If you drive a coach and horses through an agreement or an established way of doing something, you destroy it or change it completely. The judgment appeared to drive a coach and horses through the Hague agreement. Ministers are driving a coach and horses through the plans.
drive a coach and horses throughmake something entirely useless or ineffective. British
An early example of this idiom is found in this statement by the Irish lawyer Stephen Rice ( 1637–1715 ): ‘I will drive a coach and six horses through the Act of Settlement’. Early versions of the phrase also refer to a space big enough to turn a coach and six (or four ) (i.e. horses) in, but the context, following Rice's declaration, is very often that of rendering a law or regulation ineffective.
1997 Spectator A coach and horses was driven through one of the guiding principles of American statecraft.
drive a coach and ˈhorses through somethingsucceed in avoiding certain rules, conditions, etc. in an obvious and important way, without being punished: The wage increase we’ve been given is three times the government’s limit. We’ve driven a coach and horses right through their pay policy.
n. a mobile snack truck. (The term was revived in the Persian Gulf War.) The roach-coach pulled up in front of the dorm every night about eleven.