Idiom: Back In The DayCheck definitions of...backinthedayMeaningsHow to pronounce "back in the day":AU Your browser does not support the audio element. In the distant past; especially, at a time fondly remembered.A-Z Proximitiesback at youback downback fortyback gammon playerback in back in the day back in the gameback intoback offback officeback of one's handSimilar Idiomsback-to-back-to-backday after dayday in, day outback in the dayat the end of the dayas the day is longcatch of the daygive the time of dayrue the dayrule the daysave the daysee the light of dayseize the daythat'll be the daythe other daywin the daya cold day in Julya day late and a dollar shortan apple a dayanother day, another dollarSimilar Phrasesback-to-backday-after-dayday-by-dayday in day outday-to-dayback porchback vowelback yerceding backback awayback braceback breakerback burnerback circleflanker backgo back onhark backback countryback doorback down