Englishfor English speakers
public
Adjective
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Something is public if it is about or for all the people.
You can't tell me to go away. This is a public place.
public
Noun
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All of the people in a big place like a country.
I'm going to write this in the newspaper because the public needs to know it.
Getting Western publics to understand the nature of the war is hard enough.
The dress rehearsal was opened to the general public as well as celebrities.
health
Noun
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If you talk about the health of a person or animal, you are talking about whether they are sick or not.
The doctors believe that the disease will not be a serious danger to public health.
Before you start exercising, you should be in good health.
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If you have health you are not sick (do not have disease) and are not hurt.
officer
Noun
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An officer is a person in an army who has much authority. A general and a captain are two types of officers.
A soldier must obey his commanding officer.
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An officer is a policeman, often called a "police officer." (Note, "officer" is often better than "policeman" because the officer could be a woman or a man.)
Officer, can you help me, I've been robbed.
The thief was taken to jail by the officers.
He was arrested for hitting an officer.
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An officer is someone who holds office (meaning, has authority).
The judge is an important officer of the court.
She is the chief executive officer, or CEO, for our company.