A peephole is a tiny hole you look through, most often in a front door, so you can see who is outside before you open it. Some are just a hole; many doors have a little glass lens, and people still call that a peephole.

A peepholepeephole is a tiny hole you look through是一個你透過它看的小洞，most often in a front door最常見的是在前門上，so you can see who is outside before you open it這樣你開門前就能看到外面是誰。Some are just a hole有些就只是一個洞；many doors have a little glass lens很多門上裝的是一個小玻璃鏡片，and people still call that a peephole大家還是把那個叫做peephole。

You also meet the word for a hole in a wall, a fence, or a box when someone wants a quiet look without being seen.

You also meet the word你也會聽到這個字 for a hole in a wall, a fence, or a box用在牆上、圍籬，或箱子上的洞，when someone wants a quiet look without being seen用在有人想安靜地看一眼、又不想被看到的時候。

It is ordinary household English, a little old-fashioned in speech — some people now say spyhole (British) or door viewer.

It is ordinary household English它是很普通的家常英文，a little old-fashioned in speech講起來有點老派——some people now say spyhole (British) or door viewer現在有些人會說spyhole（英式）或door viewer。

Though actually, you peep through it: the first half is that small, secret look, not the verb peer, which is a longer, harder stare. Formal writing almost never needs the word; spoken English, safety notices, and crime stories do.

Though actually不過實際上，you peep through it你是peep（偷看）透過它看：the first half is that small, secret look前半部分就是那種小小的、偷偷的一瞥，not the verb peer不是動詞peer，which is a longer, harder starepeer是比較長、比較費力的凝視。Formal writing almost never needs the word正式寫作幾乎用不到這個字；spoken English, safety notices, and crime stories do口語、安全告示和犯罪故事裡才會用。