to commit oneself to a course from which there is no retreat—U.S. politics, 1852—from a military tactic in which an army cuts off its means of retreat by destroying the route by which it might be pursued
absinthe—UK, 1882—loan translation from French ‘la fée verte’ (1864)—‘fée’ refers to the potency of absinthe, which induces an altered state of consciousness
USA, 1923: a court in which a perpetrator of a minor offence may sentence themself and their fellow offenders—USA, 1925: a court in which a perpetrator of a minor offence may pay a fixed fine without having to stand trial
something or someone that is unalloyed, throughgoing, trustworthy—USA, 1848—refers to gold with the complete purity of twenty-four parts out of twenty-four
as ‘coats for goalposts’: UK, late 19th century—refers to the type of informal football played by young people in public spaces, in which coats or/and jumpers belonging to the players are used as improvised goalposts
Canada, 1977: pouch-pack milk, as opposed to cartoned milk—UK, 1984: bag-in-box wine (said to be of Australian-English origin, but this is not corroborated)
to create a diversion, in order to avoid a dangerous or unpleasant situation—UK, 1730—alludes to the Preface to A Tale of a Tub (1704), by Jonathan Swift