Australia—‘the block’: a street or area in a city or town in which it is fashionable to promenade—‘to do the block’: to promenade in such a street or area—1868, in reference to a section of Collins Street in Melbourne
USA, 1936—characteristic or reminiscent of the Left Bank (‘Rive Gauche’ in French), the part of Paris south of the River Seine, noted for its intellectual and artistic life
UK, 1958—a type of moustache in which the two ends extend downwards to the chin—refers to Emiliano Zapata, who was portrayed with a moustache of this kind by Marlon Brando in Viva Zapata! (1952)
USA, 1927: a woman with a silvery-blonde hair colour—USA, 1930: specifically applied to Jean Harlow—also (USA, 1927) ‘platinum’: a silvery-blonde hair colour
It has been said that ‘(as) right as a trivet’ an alteration of ‘(as) tight as a rivet’. But the latter phrase, which postdates the former, originally meant ‘extremely tight’, not ‘thoroughly or perfectly right’.
chiefly Australian, 20th century—formula for estimating the size of rural holdings—also used figuratively of someone who talks boastfully without acting on their words
someone or something that is fashionably or artfully dishevelled or dilapidated—in early use: someone or something whose dishevelment or dilapidation is unintentionally attractive or fashionable—USA, 1901
Australia, 1950—UK, 1962—derogatory and offensive: a middle-aged or elderly woman, especially one who is unattractive or unfeminine—refers to ‘boiler’, i.e., a tough old chicken for cooking by boiling
UK & Ireland—a shop that sells a wide range of goods at low prices, typically one pound or less—hence also: of the type or quality found in a pound shop, cheap, second-rate