正門(せいもん) せいもん noun main gate, main entrance 1. main gate, front gate The principal entrance to a building, institution, or grounds; the front or formal entrance. 正門(せいもん)は閉(し)まっている。🔊 The main gate is closed. 会社(かいしゃ)の正門(せいもん)には警備員(けいびいん)がいる。🔊 There are security guards at the company's main gate. 学校(がっこう)の正門(せいもん)の前(まえ)で待(ま)ち合(あ)わせしよう。🔊 Let's meet in front of the school's main gate. 正門(せいもん) is the main or front gate of an institution, as opposed to side entrances or back gates.Similar words裏門(うらもん): back gate通用門(つうようもん): service entrance, side entrance南門(なんもん)/北門(ほくもん)/etc.: south gate, north gate, etc.UsageSchools and universitiesShrines and templesCorporate buildingsGovernment facilitiesParks and gardens Related Words Antonym: 裏門(うらもん) (back gate) Compare: 通用門(つうようもん) (service entrance, side entrance) general Added 2026.1.14 7:31 · Revised 2026.10.5 11:10 04000/04350_seimon