USA, 1927—denotes male vigour, especially sexual—with wordplay on ‘penis’—interestingly, via an alteration of the Latin diminutive ‘pēnĭcillus’, denoting literally a little tail, hence a painter’s brush or pencil, ‘pencil’ is derived from Latin ‘pēnis’, denoting literally a tail, hence the penis
USA, 1888—deranged, irrational (also, in early use, drunk)—based on the image of a trolley-wheel coming off its trolley-wire—‘trolley’, also ‘trolley-wheel’: a pulley at the end of a pole, for transmitting electric current from an overhead wire to the motor of a trolley-car
a place where one is as happy, relaxed or comfortable as in one’s own home; especially a place providing homelike accommodation or amenities—UK, 1839, in advertisements for hotels
literal meaning (1551): halfway across the sea—figurative meanings (1692): halfway towards a goal or destination, half through with a matter, halfway between one state and another—also (1699): half drunk
UK, 1929—a drink of alcohol—especially used of an initial drink taken by someone (e.g. a young person) who is particularly susceptible to the effects of alcohol
UK, 1877—humorous: a holiday or period of leisure spent drinking alcoholic liquor—blend of the nouns ‘alcohol’ and ‘holiday’—has, in the course of time, been coined on separate occasions by various persons, independently from one another
‘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
USA, 1906: a person who advocates equality for all people at a high level of prosperity (i.e., who believes in champagne for everybody)—UK, 1956: a person who espouses socialist ideals while enjoying a wealthy lifestyle
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
USA, 1950—a midday meal, with several martinis taken as aperitifs, enjoyed by businessmen, and/or politicians, and/or federal-government employees—especially in ‘two-martini lunch’ and ‘three-martini lunch’