See Also: Twenty One(casino)
twenty(dictionary)
twenty-first(dictionary)
twenty-four seven(dictionary)
twenty-one(dictionary)
twenty-twenty(dictionary)
twenty-two(dictionary)
twenty(dictionary)
Twenty-Third Psalm, the(dictionary)
Twenty-day period(finance)

twenty-twenty (oh)



20/20 n [U]
[Date: 1800-1900; Origin: From normal sight being judged on the ability to read letters at a distance of 20 feet]
twenty-twenty vision
the ability to see things normally, without needing glasses
::A pilot must have twenty-twenty vision.
twenty-twenty hindsight
used to say that it is easy to know what you should have done in a situation after it has happened, but you did not know what to do earlier