Englishfor English speakers
ceiling
Noun
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The top part of a room.
This room has a very interesting ceiling.
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The upper limit of an object or action.
price ceilings
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The highest altitude that an aircraft may fly.
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The smallest integer greater than or equal to a given number.
The ceiling of 4.5 is 5.
beam
Noun
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A beam is a line of light or energy.
A beam of sunlight came through the window making a rectangle on the floor.
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A beam is a long straight piece of wood or metal used in building to support weight.
Inside, the ceiling of the tunnel was held up with beams and was high enough that we could stand.
beam
Verb
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If you beam a signal from one place to another, you send it through the air.
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If you beam, you smile and look very happy.