main gate; main entrance
Refers to the primary, often formal, entrance to a building, campus, or compound. Commonly used for schools, temples, and large facilities.
学校の正門の前で待ち合わせましょう。
Let's meet in front of the school's main gate.
正門から入ってください。
Please enter through the main entrance.
The students entered through the main gate and headed to their classrooms.
Let's meet in front of the main gate at 3 p.m.
The new students, looking nervous, passed through the main gate.