an occasion on which enjoyment or profit is derived from the suffering or discomfiture of others—UK, 1836—alludes to the description of a gladiator dying in a Roman arena in Childe Harold’s Pilgrimage (1818), by Byron
Canada, 1970—the people who were born during the ‘baby boom’ of the years immediately following WWII, considered as a demographic bulge—any short-term increase or notably large group
the final four months of the calendar year, i.e., September, October, November and December—UK, 1863—from ‘-ember’ in ‘September’, ‘November’ and ‘December’
a reader of, or a writer in, The Guardian, seen as being typically left-wing, liberal and politically correct—UK, 1997—The Guardian is a centre-left newspaper published in London and Manchester, England
soldiers, especially low-ranking recruits, collectively regarded as expendable in war—UK, 1740—coined by William Shakespeare in Henry IV, Part 1 (1598)
soldiers regarded simply as material to be expended in war—‘cannon fodder’ (1847), said to have been coined after German ‘Kanonenfutter’—French ‘chair à canon’ (1814), first used in reference to Napoléon Bonaparte
USA, 2019, derogatory—people (regarded as elitist and pretentious) who are alert to racial or social discrimination and injustice—a blend of the adjective ‘woke’ and of the noun ‘literati’
gardening or garden design in an affected, fussily decorative or over-elaborate style; archaic and affected language—UK, 1931—alludes to “A garden is a lovesome thing, God wot!”, in My Garden (1893), by the Manx poet T. E. Brown