Englishfor English speakers
logic
Noun
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Logic is a system of careful step by step thought or argument that tries to explain truth.
It wasn't easy to see the logic of her plan.
flag
Noun
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A flag is a piece of cloth, usually marked with a colourful symbol or sign.
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A flag flown by a ship is to show the presence on board of the admiral (the leader of a group of ships); the admiral himself; or his flagship.
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The use of a flag, especially to show the start of a race or other event.
Be ready to start running immediately at the flag.
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On a computer, a flag is a variable or place in the computer's memory that keeps a true-or-false, yes-or-no value, usually either recording the fact that a certain event has happened or asking for a certain action to happen if it's an action that doesn't always happen.
flag
Verb
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If you mark with a flag, it shows the importance of something.
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(often with down) To signal to, especially to stop a car that's driving past, etc.
Please flag a taxi down for me.
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When a person flags, the person becomes weak, tired or feeble.
His strength flagged toward the end of the race.
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To signal or mark something that happened.
The compiler flagged three errors.
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To set the value of a variable in a computer program to true.
Flag the debug option before running the program.