A crackhead is a very informal, often unkind name for a person who uses crack, a strong illegal form of cocaine that is smoked. The word points at the person through the drug, as if that is all they are.

A crackhead crackhead is a very informal, often unkind name是一個非常口語、常常帶點惡意的稱呼，for a person who uses crack用來叫吸食快克的人，a strong illegal form of cocaine that is smoked快克是一種很強、用吸的非法古柯鹼。The word points at the person through the drug這個字是透過毒品去指這個人，as if that is all they are好像這個人就只是這樣而已。

It belongs to street talk and rough films, not to a doctor's notes and not to polite conversation.

It belongs to street talk and rough films它屬於街頭用語和粗俗的電影，not to a doctor's notes不是醫生病歷上會出現的，and not to polite conversation也不是禮貌對話裡會用的。

People also stretch it: they call someone a crackhead just because that person is acting wild, messy, or stupid, even when no drug is involved. That stretch is common and ugly; it still hurts, and it is not the careful meaning.

People also stretch it大家也會把這個字用得更廣：they call someone a crackhead就叫某人crackhead，just because that person is acting wild, messy, or stupid只因為這個人表現得瘋瘋癲癲、亂七八糟或笨笨的，even when no drug is involved即使跟毒品完全沒關係。That stretch is common and ugly這種延伸用法很常見，也很難聽；it still hurts它還是會傷人，and it is not the careful meaning而且這不是它嚴謹的意思。

You should recognise the word so a film or a song does not confuse you, but it is a harsh label to put on a real person.

You should recognise the word你應該認得這個字，so a film or a song does not confuse you這樣看電影或聽歌時才不會被搞混，but it is a harsh label但用它來標籤一個真實的人，to put on a real person是很刺耳的。