A room in a public place — a restaurant, an office, an airport, a school — where there are sinks and toilets. Notice what the word is doing: it says "the room where you wash", but what people usually mean is "the room with the toilet". That is on purpose.

A room in a public place公共場所裡的一個房間——a restaurant, an office, an airport, a school像餐廳、辦公室、機場、學校——where there are sinks and toilets裡面有洗手台和馬桶。Notice what the word is doing注意這個字在做什麼：it says "the room where you wash"它字面說的是「洗手的房間」，but what people usually mean is "the room with the toilet"但大家實際上是指「有馬桶的房間」。That is on purpose這是故意的。

English keeps inventing gentle words for this room because talking about toilets directly feels blunt, so we borrow the polite half of what happens there.

English keeps inventing gentle words for this room英文一直在為這個房間發明比較委婉的說法，because talking about toilets directly feels blunt因為直接講廁所感覺太直白，so we borrow the polite half of what happens there所以就借用在那裡發生的事情中比較體面的那一半。

Washroom is the standard, ordinary word in Canada, and it is used in the United States too, where restroom and bathroom are commoner; in Britain it sounds slightly foreign, and people there say toilet, the loo, or the ladies / the gents. In Taiwan, the sign you see in an airport or department store will usually say restroom or toilet, and washroom will look a bit Canadian.

Washroom is the standard, ordinary word in CanadaWashroom 在加拿大是標準又普通的說法，and it is used in the United States too美國也會用，where restroom and bathroom are commoner只是那裡比較常講 restroom 或 bathroom；in Britain it sounds slightly foreign在英國聽起來有點外國腔，and people there say toilet, the loo, or the ladies / the gents那裡的人會講 toilet、the loo，或 the ladies / the gents。In Taiwan在台灣，the sign you see in an airport or department store will usually say restroom or toilet機場或百貨公司的標示通常會寫 restroom 或 toilet，and washroom will look a bit Canadian而 washroom 看起來就有點加拿大味。

It is countable, and note it is one word, not two. There is also an older, more literal use: in a factory or workshop, the washroom is genuinely the room where workers wash up after their shift.

It is countable它是可數名詞，and note it is one word, not two而且要注意它是一個字，不是兩個字。There is also an older, more literal use還有一個比較舊、比較字面的用法：in a factory or workshop在工廠或工作坊裡，the washroom is genuinely the room where workers wash up after their shiftwashroom 真的就是工人下班後洗手洗身體的那個房間。