n.
1.profane or obscene expression usually of surprise or anger
2.a commitment to tell the truth (especially in a court of law)
3.a solemn promise, usually invoking a divine witness, regarding your future acts or behavior
Idiom of the Day
pie in the sky
a goal or plan that is too optimistic, a future reward after death
The boy's plans for his summer were pie in the sky. He would never complete them.