Englishfor English speakers
plastic
Noun
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Plastic is a material that can change its shape and is used to pack products.
plastic
Adjective
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If something is plastic, it is made of plastic.
Cameron is going to recycle some plastic bottles.
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If someone or something is plastic, it is able to adapt to different conditions.
The brain is very plastic at a young age.
lock
Noun
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A lock is a metal thing on a door (or on a window, drawer, etc.) that stops people from opening the door unless they have the right key to open it.
No one will take things from my house. I have a very strong lock on the door.
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A lock is two or more gates (doors) in water to let boats move from lower water to higher water or the other way.
lock
Verb
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Someone locks a door when they close the lock with a key so that no one can come in.
Remember to lock the door when you leave the house.