這個拼法底下其實是2個不同的字，意思沒有關係， 只是長得一樣。下面分開列出來。跳到 sausage in a roll · show off with tricks (sport)
hot dog
nounPicture what gets handed to you at a ball game: a long soft roll, a smooth cooked sausage lying in it, and a line of ketchup and mustard down the middle. The whole thing is a hot dog, and so is the sausage by itself. Whether the bread is in the picture is what the sentence around it decides.
From the word’s history
Wiktionary traces the name to hot plus dog, a joke about what the meat was supposed to be made of, first recorded in 1884 in the Evansville Daily Courier.
維基詞典把這個名字追到 hot（熱的）加 dog（狗），源頭是一句拿「裡面的肉是什麼做的」開的玩笑，最早的紀錄是 1884 年印第安納州 Evansville Daily Courier 這份報紙。可以想成玩笑話最後變成了正式的食物名。
Wiktionary entry 'hot dog' (kaikki extract kaikki:3f6f69a190036ae4:893081699), supplied in the evidence packet
A second word, same spelling
hot dog
verbPicture the who adds one more spin on the way in, with one eye on the beach. The trick is real and so is the risk, but part of the reason it happens is that people are watching. That picture gives both the action and the person who keeps doing it.