A back-of-the-envelope calculation is a quick and informal mathematical computation. This type of calculation is used as an estimate to arrive at a ballpark figure when needed quickly.
If someone goes out on a limb, they do something they strongly believe in even though it is risky or extreme, and is likely to fail or be criticized by other.
He's going out on a limb in criticizing her own party leadership.
To direct all your efforts into the particular task you are involved in.
I'm going to get my head down and try and finish this report before I go home today.
The blue collar worker definition indicates that these workers perform primarily manual labor.
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In 2024, the number of babies born in South Korea increased for the first time in nine years. The change is welcome news for a country that is dealing with serious population problems.
