from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Foolish, deceitful, or boastful language.
- n. Something worthless, deceptive, or insincere.
- n. Insolent talk or behavior.
- intransitive v. To speak foolishly or insolently.
- intransitive v. To engage in idle conversation.
- transitive v. To attempt to mislead or deceive by talking nonsense.
- adj. Very angry; incensed.
- interj. Used to express extreme displeasure or exasperation.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. False or exaggerated statements made to impress and deceive the listener rather than inform; nonsense.
- n. A card game in which the object is to bluff about cards laid down and to determine when one's opponents are bluffing; also known as "BS" or "I Doubt It".
- n. An object of frustration and/or disgust, often caused by a perceived deception.
- n. The faeces of a bull.
- adj. Absurd, irrational, or nonsensical. Most often said of speech, information, or content.
- v. To tell lies, exaggerate; to mislead; to deceive.
- v. To have casual conversation with no real point.
- v. To come up with on the spot, to improvise poorly.
- interj. An expression of disbelief or doubt at what one has just heard.
from the GNU version of the Collaborative International Dictionary of English
- n. a ludicrously false statement.
- v. to talk through one's hat.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. obscene words for unacceptable behavior
- v. speak insincerely or without regard for facts or truths
From bull + shit. In use since the 1920s. (Wiktionary)