‘parlour patriot’ (1797)—the earliest of the phrases in which ‘parlour’ is a depreciative attributive modifier used of a person claiming to be committed to a cause but not actually involved in the achievement of that cause—‘parlour’ is also used of the claimed commitment to a cause without actual involvement in the achievement of that cause
The noun ‘armchair’ is used as an attributive modifier meaning: 1) based or taking place in the home as opposed to the world or environment outside; hence, chiefly depreciatively: 2) lacking or not involving practical or direct experience of a particular subject or activity.
‘to be destined or appropriate for a particular person’—originated during the First World War as ‘to have a person’s name and number on it’, and meant, of a bullet, etc., ‘to be destined to hit a particular person’
UK, 1890—used to indicate that the person or persons guilty of a misdemeanour will not be named, in order to spare them recrimination—‘pack drill’: a military punishment involving a lengthy period of marching up and down carrying full equipment
dismissal from employment—UK, 1882, as ‘the noble order of the boot’—‘the boot’ refers to kicking somebody out—the phrase puns on two acceptations of ‘order’: an authoritative command and an institution founded for the purpose of honouring meritorious conduct
USA, 1937—an uneasy sensation felt, especially in the stomach, as a result of nervousness or apprehension—based on the notion that the fluttering of butterflies may produce a similar sensation
UK, 1854—to belong to, or to sympathise with, two opposite groups, factions, etc.—probably a loan translation from French ‘avoir un pied dans les deux camps’ (1843)
Australia, 1973—used of anything that is absolutely unacceptable, and of any disagreeable situation or experience—‘Jap’: derogatory shortening of ‘Japanese’—Anzac Day: commemoration of the landing of the Australian and New Zealand Army Corps in the Gallipoli Peninsula in 1915
1980s—to become wildly or explosively angry; to become highly excited or enthusiastic; to intensify rapidly and especially alarmingly—refers to the failure of a guided missile’s guidance system (1966)
USA, 1953—value for money, return on an investment—originally used of military spending on nuclear weapons—‘bang’ denotes a nuclear explosion, ‘buck’ denotes a dollar