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An entrance or doorway leading into a building, room, or place.
映画館の入り口で友達と待ち合わせた。
I met my friends at the entrance of the movie theater.
この公園の入り口は閉まっています。
The entrance to this park is closed.
Can also refer to the beginning or starting point of something abstract, such as a project or process.
'入り口' is the most natural way to say 'entrance' in everyday Japanese. '入口' is more formal and often seen in signs or official contexts.
Remember that '入り口' means 'entrance', while '出口' means 'exit'. Mixing them up can lead to confusion, especially in places like train stations or buildings.
Composed of '入り' (to enter) and '口' (opening or entrance).
In formal contexts, '入口' is often used interchangeably with '入り口', but '入り口' is more commonly used in everyday speech.