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40, forty (EN)
numeral, noun

numeral “40”

40, forty
  1. the number after 39 and before 41
    She invited 40 guests to her birthday party.

noun “40”

singular 40, forty, plural 40s, forties
  1. in the US and in slang, a large bottle that holds 40 fluid ounces of malt liquor beer
    He grabbed a 40 from the fridge, ready to kick back with his friends.