From WordNet (r) 3.0 (2006):
dirt
adj 1: (of roads) not leveled or drained; unsuitable for all
year travel [syn: dirt, ungraded]
n 1: the part of the earth's surface consisting of humus and
disintegrated rock [syn: soil, dirt]
2: the state of being covered with unclean things [syn: dirt,
filth, grime, soil, stain, grease, grunge]
3: obscene terms for feces [syn: crap, dirt, shit,
shite, poop, turd]
4: disgraceful gossip about the private lives of other people
[syn: scandal, dirt, malicious gossip]