Etymologically, a jewel is a little game, a little plaything: ‘jewel’ is from a French diminutive of ‘jeu’, meaning ‘a game’, ‘a play’. The word ‘bijou’ is from Breton ‘bizou’, meaning ‘a finger-ring’, from ‘biz’, ‘finger’.
19th century—The adverb ‘hands down’ originated in horse racing: a jockey who is winning comfortably is able to lower his hands and relax his hold on the reins.
UK, 1919—possibly a mere euphemism for having too much to drink, regardless of the actual number of drinks that have been consumed (‘eight’ probably arbitrary)
possibly from ‘cloak and sword’, from Spanish ‘(comedia) de capa y espada’, a type of dramas in which the main characters wore cloaks and swords or daggers
UK, 1972—‘XXXX’: a euphemistic substitute for a four-letter swear word, usually ‘fuck’—it did not originally refer to the Australian lager Castlemaine XXXX
‘miss’: unmarried woman or girl; 17th cent., short for ‘mistress’—‘Ms’: title free of reference to marital status; 20th cent., blend of ‘Mrs’ and ‘Miss’
from Speed the Plough (1798), by Thomas Morton; Dame Ashfield is constantly fearing to give occasion for the sneers of Mrs Grundy, her unseen neighbour