Englishfor English speakers
flight
Noun
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Flight is the act of flying: moving through the air using wings.
Birds have had flight for millions of years.
The flight of the bird was beautiful.
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A flight is one trip on an airplane.
The flight to Boston leaves soon.
This flight is going to New York.
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Flight is the act of running away and hiding.
The flight of the man just after the crime made the police think he was guilty.
altitude
Noun
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measured from sea level.
The altitude of is 3776 meters.
envelope
Noun
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An envelope is a paper cover that you put a letter in to send it.
She put the letter into the envelope, addressed it to Charles, and put a stamp on it.
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An envelope is a covering that goes all the way around something.
Each virus has a special envelope of protein surrounding it.