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A booger is that thick bit of sticky or dried stuff from inside your nose. Doctors may say ; children, and adults being funny, say booger. It is everyday American body-talk: a little rude, a little gross, not a swear word, and not for a careful essay. British speakers often say bogey for the same thing. People pick them, wipe them, and pretend they never did. You will hear it at home and in jokes, not in a formal letter.
鼻屎（口語；較文雅才說鼻垢）
組成An alteration of older dialect words buggard (bug + -ard), boggart, or boggard — goblin / scare-thing words. Compare bogey. Alemannic German Naaseböög is the same nose-stuff. (A different booger, a person on a boogie board, is boogie board + -er, not this sense.)
原始詞典資料6 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
boogernoun詞源 1/ˈbʊɡɚ/
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slangA piece of solid or semisolid mucus in or removed from a nostril.
- Mama says you mustn't pick boogers out of your nose with your fingers; you must use your handkerchief.
- Now in the halls of the necro lord / Flash of fear when he sees my sword / Raped his woman, smoked his bone / Leave a booger underneath his throne!
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slangSomething suggestive of this material.
- The latter is discovered by Caesar, Maurice, and their compadres living in a crumbling, snow-packed ski lodge, its antler chandeliers hung with boogers of ice in a mockery of humanity’s pretensions of alpha-predator-hood.
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slangA thing; especially a problematic or difficult thing.
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A monster, a bogey.
boogernoun詞源 2/ˈbʊɡɚ/
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derogatoryslanghobbieslifestylesportsA bodyboarder.
- Watch the local boogers charge it!
boogernoun詞源 3/ˈbʊɡɚ/
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A performer of the booger dance.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。