1. preposition /θɹuː,θɹu/
I went through the window.
b) Entering, then later exiting.
I drove through the town at top speed without looking left or right.
2. adjective /θɹuː,θɹu/
a) Passing from one side of an object to the other.
Interstate highways form a nationwide system of through roads.
b) Finished; complete
They were through with laying the subroof by noon.
3. adverb /θɹuː,θɹu/
a) From one side to the other by way of the interior.
The arrow went straight through.
b) From one end to the other.
Others slept; he worked straight through.
4. noun /θɹuː,θɹu/
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