Gate
noun
The kanji and the word are exactly the same. That means they share meanings as well.
もん
This has the same reading as the kanji you learned, meaning you know the reading!
私たちの家は、茶色い門のある家のすぐとなりです。
Our house is right next to the house with a brown gate.
あそこの大きい門をくぐるとお寺が見えるよ。
If you pass under the big gate, you will see the temple.
門にはカギがかかっているんだ。
The gate is locked.