One way to hold this word is to keep a mouth in mind. Not a hole punched through something, but an opening that is made to be an opening — something is supposed to go in or come out of it. The nose, the ears, the end of a pipe, the tiny points in a shower head, the dark gap at the bottom of a cliff: all of them are places with a rim, and a way through. English keeps this word for careful writing, so when you meet it the writer is usually being exact rather than being colourful.
From the word’s history
Recorded as coming through Middle French and Old French from Late Latin orificium, literally 'the making of a mouth', from os (mouth) plus facio (to make).
依據來源，這個字經由中古法文、古法文，回到後期拉丁文 ōrificium，字面就是「做出一張嘴」：ōs（嘴）加上 faciō（做）。這條線索剛好說明為什麼身體上的孔和管子的口共用同一個字。
Wiktionary, "orifice"
登入就可以看每一支怎麼連回核心畫面。