Definition of knock something back in English:

knock something back

phrasal verb

informal
  • Consume a drink quickly and entirely.

    • ‘we knocked back a few beers’
    • ‘The recommended way to enjoy soju or sake, the national drinks of South Korea and Japan, is by quickly knocking them back in short, small shots.’
    • ‘We clinked glasses and I knocked my drink back, feeling the burn in my throat and the warmth in my stomach.’
    • ‘Drinkers across the social spectrum are knocking it back like never before and the pressure to join in has never been stronger.’
    • ‘Once again Hemingway mechanically picks up his glass, knocks it back in a single gulp, and slams it back down.’
    • ‘True beer aficionados know damn well there's more to enjoying a good brew than just knocking it back with detached abandon - sip, gulp, belch.’
    • ‘Pandora settled down again and enjoyed the mood: everyone was chatting or drinking, mostly vodka, knocking it back like Perrier water.’
    • ‘Vodka was limited mostly to the liquor cabinets of Eastern Europe until World War II, when Americans and the rest of Europe started knocking it back.’
    • ‘Some bars sell highballs for as little as 75 cents, allowing some people to knock them back like there's no tomorrow.’
    • ‘Four out of 10 men, it said, and two out of 10 women regularly knock back at least a bottle of wine in one session to land them in the binge-drinker category.’
    • ‘She poured herself a glass of wine and knocked it back and poured another, then turned to face him.’
    swallow, gulp down, drink up, swill down, swill, quaff, guzzle, toss off, consume, finish
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