プログレッシブ和英中辞典(第4版)の解説
きもん【鬼門】
❶〔いみきらう方角〕an unlucky quarter；〔丑寅(うしとら)の方角〕the northeastern quarter
その方角は鬼門に当たる
That is an unlucky direction.
家を建てる時，鬼門を避けた
When he built his house, he avoided having it face the northeast.
❷〔苦手〕a weakness; a weak point
あの男は私には鬼門だ
I just can't handle him, so I avoid him like the plague.