UK and Ireland—with reference to the fact that Horatio Nelson was blinded in one eye—(1922) ‘until/when Nelson gets his eye back’ is used of a very long time in the future—(1933) the metaphor of Nelson getting his eye back is used of a very small chance of success
UK, 1892—very rarely—refers to the fact that Preston Guilds are held only once every twenty years—Preston is the administrative centre of Lancashire, a county of north-western England, on the Irish Sea
UK, 1980—denotes someone or something that is unwelcome, unpopular, etc.—first recorded in a remark by the Scottish comedian Billy Connolly, but perhaps originated in Royal-Navy slang
Australia, 1909—(horseracing) a bet is sure to pay off; (in extended use) something is a very strong probability—from the notion that the punter is so confident of winning the bet that he is prepared to put the whole city of London on a horse to win a brick, i.e., a ten-pound note
USA—‘in mothballs’ (1892): in a state or period of inactivity, disuse, reserve, storage or postponement—‘out of mothballs’ (1905): back into activity, into use
USA, 1956—denotes a core principle, value, belief, characteristic, aspect, etc., of the U.S.A. or its citizens—more generally, the nouns ‘motherhood’ and ‘apple pie’ have been juxtaposed in enumerations of things and persons exemplifying U.S. values
from 1924 onwards in stories by English author P. G. Wodehouse—a facetious appellation for a medical practitioner specialising in the diagnosis and treatment of mental illness—‘loony’: shortened form of ‘lunatic’
USA, 1936—psychiatrists or psychiatric workers—refers to the traditional use of white coats by medical personnel—often used in the stereotypical image of a mentally-disordered person being borne away to a psychiatric hospital by psychiatric workers
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.
USA—1966: an artificial grass surface used for sports fields—‘Astro-’: from the first use of Astroturf in the Astrodome stadium at Houston, Texas—1972, with humorous allusion to ‘grassroots’: an artificial version of a grassroots campaign