名詞 dirt:

1. the part of the earth's surface consisting of humus and disintegrated rock
   同義詞：soil
2. the state of being covered with unclean things
   同義詞：filth, grime, soil, stain, grease, grunge
3. obscene terms for feces
   同義詞：crap, shit, shite, poop, turd
4. disgraceful gossip about the private lives of other people
   同義詞：scandal, malicious gossip

形容詞 dirt:

1. (of roads) not leveled or drained; unsuitable for all year travel
   同義詞：ungraded

1. She cleaned the dirt from her finger-nails.
   她從指甲里剔掉污垢。
2. He scoured off the dirt from the floor.
   他擦去地板上的污垢。
3. Wash the dirt off your hands.
   把你手上的泥污洗掉。

dirt

n.（名詞）
Earth or soil.
泥土；土壤

A filthy or soiling substance, such as mud or dust.
泥，灰塵：骯臟或泥土的物質(zhì)，如爛泥或灰塵
Excrement.
排泄物
A squalid or filthy condition.
骯臟：污穢或骯臟的狀態(tài)
One that is mean, contemptible, or vile.
卑鄙的人：卑鄙、可鄙或邪惡的人

Obscene language or subject matter.
污穢的言行：下流話或下流行為
Malicious or scandalous gossip.
流言，誹謗：惡意的或誹謗性的閑話
Information that embarrasses or accuses.
惡言：使人難堪或指控人的消息
Unethical behavior or practice; corruption.
墮落：不道德的行為；腐化
Material, such as gravel or slag, from which metal is extracted in mining.
礦渣：諸如砂礫或礦渣等物質(zhì)，可從中提取金屬

來源：
Middle English
中古英語
variant of drit [excrement, filth, mud]
drit的變體 [排泄物，骯臟，泥]
from Old Norse
源自 古斯堪的納維亞語