Ireland, 1914—the action or practice of attacking, or acting against, someone in a candid or open manner, as opposed to deceptively or duplicitously—coined after ‘backstabbing’ (i.e., the action or practice of attacking, or acting against, someone in a treacherous or underhand manner)
USA, 1995—a freelance videographer or photographer, characterised as being extremely aggressive in pursuing celebrities to video or photograph them—a blend of the nouns ‘stalker’ and ‘paparazzo’
UK, 1914: an apparent ability to sense or intuit the presence of nearby spiders—USA, 1963, in reference to Spider-Man: a supernatural ability or power to perceive things beyond the normal range of human senses
USA, 1826, as ‘to flog somebody like seven bells’—to give a severe beating to somebody—‘seven’ is perhaps simply an arbitrary intensifier—cf. phrases such as ‘like seven bells half-struck’ (‘with as much speed as possible’) and ‘to blow seven bells’ (‘to blow a violent gale’)
USA, 1924—a questionable or unorthodox practice that has long been established—from literal uses (19th century onwards) referring to former Spanish colonies in America
to make bigger or greater, to enlarge—UK, 1884, as a translation of ancient Greek ‘μεγαλύνειν’ as used in the Acts of the Apostles, 5:13—recoined in 1996 in the U.S. animated television series The Simpsons
(literally) to formally agree to something by signing an official document—(figuratively) to make a firm commitment about something—USA, 1900s, in reference to life-insurance contracts