Doors Of A Gate
Gate
noun
What are gate doors? The doors of a gate, though we may still just call them a gate in English.
門扉 is a formal word you'll encounter more often in writing or architecture talk. It usually refers specifically to the part of the gate that slides or swings open (in other words, its doors).
This is a jukugo word that uses on'yomi readings. You've learned the もん reading for 門, but you haven't seen the ひ reading for 扉 yet (plus, it gets changed to ぴ in this word). Here's a mnemonic to help you remember that rendaku'd reading:
The doors of a gate often smell like pee (ぴ). Why? Dogs and drunks alike love to pee against gates, that's why.
私が門扉の前で待っていると、誰かが割り込んできました。
When I was waiting in front of the gate, someone cut in front of me.