Englishfor English speakers
extension
Noun
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The space that something occupies.
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Extension is the process of making something longer.
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An extension is the time or part of something that was added to make it longer.
She had extensions put in her hair and now she has long hair.
He couldn't pay in May so the bank gave him an extension until July.
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An extension is the operation of pulling the two ends of a broken bone to bring the broken pieces into the same straight line.
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Extension is the act of moving an arm, leg, finger, etc. so that it is straight.
hand
Noun
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Your hands are the parts of your body at the end of your arms. A hand has four fingers and a thumb.
Mother, I'm afraid, please hold my hand.
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Clock hands are pointed needles that show what time it is.
The long hand is pointing to the 4, which refers to how many hours have passed. The short hand is pointing to the 7, which refers to how many groups of 5 minutes have passed. The time is therefore 4:35.
hand
Verb
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If I hand you something, I give it to you.
Please hand me that tool. I can't reach it.
wheel
Noun
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A wheel is a round thing (circle) on a cart or carriage or train or other machine that moves. A cart has four wheels that touch the road and turn.
The cart needs a very smooth road because it has little wheels.
wheel
Verb
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If you wheel something somewhere, you transport it in or on a vehicle that has wheels.
The nurses wheeled her into the operating theatre.
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If something is wheeling, it is travelling in circles.
The eagle wheeled and dived towards the ground to catch its prey.
block
Noun
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A block is a hard piece of material, usually with six smooth sides.
When I was young, I liked building things with wooden blocks.
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A city block is the distance from one road to the next.
We have to walk about three blocks to the restaurant.
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In computers, a block is a restriction that prevents access to something.
I could not start a page on Wikipedia because of a block.
block
Verb
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If mathX/math is blocking mathY/math, then mathY/math can't go past mathX/math.
The water in the bath won't go down. There's something blocking the drain.
The road was blocked by police.
Excuse me! You're blocking my view. I can't see.