名詞 orifice:

1. an aperture or hole that opens into a bodily cavity
   同義詞：opening, porta

1. The absence or closure of a normal body orifice or tubular passage such as the anus, intestine, or external ear canal.
   (先天性)閉鎖，無孔正常的身體孔或管道，如肛門、腸或外耳道的缺失或閉合
2. An endless flow of word stream from the same orifice.
   一連串滔滔不絕的話都是同一張嘴巴講出來的。
3. Every person has two nasal orifices.
   一個人有兩個鼻孔。
4. A mouse ran out from the dark orifice of the cave.
   一只老鼠從黑暗的洞口跑出。

or.i.fice

n.（名詞）
An opening, especially to a cavity or passage of the body; a mouth or vent.
通氣口：一個開口，特別是身體上的洞口或通路；嘴或者通氣口

來源：
Middle English
中古英語
from Old French
源自 古法語
from Late Latin ôrificium
源自 后期拉丁語 ôrificium
Latin ôs ôr- [mouth] * see ôs-
拉丁語 ôs ôr- [嘴] *參見 ôs-
Latin -ficium [a making, doing] from facere [to make] * see dhô-
拉丁語 -ficium [制作，做] 源自 facere [做] *參見 dhô-

【引伸】
or.ifi.cial