Englishfor English speakers
pit
Noun
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A pit is a big hole in the ground.
Don't fall in the pit!
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A pit is a large seed such as that in a peach.
The peach pit is hard. Don't bite it.
pit
Verb
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If something is pitted, it is marked with little hollows.
The metal is pitted due to the exposure to acid rain.
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If you pit something, you remove the seed from a fruit.
Please pit the cherries before giving it to the children.
nucleus
Noun
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A nucleus is the center of a cell or atom.
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The center of anything.