1. to be a square peg in a round hole
例句：His appearance here is like a square peg in a round hole.
2. to go back to square one
例句：The attempt failed and we had to go back to square one.
3. be there, or be square
例句：There's a bunch of people going to be at John's on Saturday. Be there or be square.
4. call sth square/square accounts
例句：He deliberately insulted me but I'll square accounts with him one day.
5. something doesn’t cut any squares with one
例句：The quarrel doesn’t cut any squares with him.
6. to be fair and square
例句：I ask no odds, I just want you to be fair and square.
7. to look someone square in the eye
例句：He sat me down, looked me square in the eye and said, "I love you."
8. on the square
例句：We just want this trail on the square.
9. out of square
例句：Both reports are from supposedly reliable sources, but they are out of square.
10. a square answer
例句：He offered us a square answer.
11. to square away
例句：He is trying to get all his legal troubles squared away as soon as possible.
12. a square deal
例句：The workers were offered a square deal of a 40-hour week and guaranteed overtime.
13. a square meal
Three square meals（经常简化为three squares）：指早、中、晚传统三餐。
例句：They haven't had a square meal for four or five days.
14. to square off
例句：French soldiers squared off with a gunman at a road checkpoint.
15. to square up
例句：I have something to square up with you.
例句：The world's most prestigious insurance company was last night squaring up to take on MPs who have accused it of being riddled with corruption.
16. to square one’s shoulders
例句：You need to square your shoulders for the subsequent task.
17. to attempt to square the circle
例句：It is easier to square the circle than to get round a mathematician.
18. to square something with someone
例句：I squared it with Dan, who said it was all right so long as I was back next Monday morning.