four Thành ngữ, tục ngữ
four-letter word
bad word, profanity: damn, hell, shit etc. He gave a good speech, but he used a lot of four-letter words.
on all fours
on one's hands and knees The man was down on all fours in the store looking for the keys to his car.
ten-four
I understand you. "Ten-four", he said when his friend asked him if he understood the plan.
ten-four (CB radio)
yes, I hear you, okay """See you in Memphis, big fella."" ""Ten-four, good buddy."""
four
see '64
four-five
45 caliber gun
four-one-one
the inside scoop:"What's the 411 on her?"
fourty-fo'
a forty-four automatic handgun
Four corners of the earth
If something goes to, or comes from, the four corners of the earth, it goes or comes absolutely everywhere.
Four-eyes
A person who wears glasses
Four-square behind
If someone stands four-square behind someone, they give that person their full support.
Fourth estate
This is an idiomatic way of describing the media, especially the newspapers.
Scattered to the four winds
If something's scattered to the four winds, it goes out in all directions.
Sixty-four-thousand-dollar-question
The sixty-four-thousand-dollar-question is the most important question that can be asked about something.
Twenty-four seven
Twenty-four seven or 24/7 means all the time, coming from 24 hours a day, 7 days a week.
four bits|bits|four
n.,
slang Fifty cents.
Tickets to the play are four bits," said Bill. Compare: TWO BITS.
four corners|corners|four
n. All parts of a place.
People came from the four corners of the world to see him. He has been to the four corners of the country. Compare: ALL OVER.
four-eyes|eye|eyes|four
n.,
slang A person who wears glasses.

A rude expression,
Hey, four-eyes, come over here.
four-leaf clover|clover|four|four-leaf
n. A small green plant with four leaves which many people think means good luck because clover plants usually have three leaves.
John has a four-leaf clover in his pocket. He thinks he will have good luck now.
fourth class(1)|class|fourth|fourth class
n. A class of mail that is not sealed and weighs a pound or more, that includes things that are bought and sold and sent in the mail, and printed things that are not second or third class mail.
Bill sent away 98 cereal box tops and a dollar and got back a sheriff's badge and gun in the mail by fourth class.
fourth world|fourth|world
n.,
informal The poor nations of the world, as distinguished from the oil-rich nations of the third world.
Sri Lanka will never join OPEC, since it is a fourth world nation.
fourth-class(2)|class|fourth|fourth class
fourth-class1 adj. Belonging to the fourth class of mail.
The package weighed a pound and a half, so it had to be sent by fourth-class mail.fourth-class2 adv. By fourth-class mail.
How did the company mail the package? Fourth-class.
on all fours|all fours|fours|on
adv. phr. 1. On all four legs; on hands and knees.
Fido sat up to "beg" but dropped down on all fours to eat the dog biscuit Sam gave him. Billy's father got down on all fours and gave the baby a ride. 2.
informal On a level of equality; of the same value.
Wigs may be widely used, but they are still not on all fours with beautiful natural hair.
ten-four?|four|ten|ten-four
v. phr.,
interrog.,
slang,
citizen's band radio jargon Do you understand?
Is that a ten-four?
four corners of the earth, the
four corners of the earth, the The far ends of the world; all parts of the world. For example,
Athletes came from the four corners of the earth to compete in the Olympics. This expression appeared in the Bible (Isaiah 11:12): “And gather the dispersed of Judah from the four corners of the earth.” Although the idea that the earth is a flat plane with actual corners has long been discarded, the term has survived.