"mentally unbalanced person," 1898, probably from crack (v.) + pot (n.1) in a slang sense of "head." Compare crack-brain "crazy fellow" (late 16c.). Earlier it was used in a slang sense "a small-time big-shot" (1883), and by medical doctors in reference to a "metallic chinking sometimes heard when percussion is made over a cavity which communicates with a bronchus."
实用例句
1. She was no more a crackpot than the rest of us.
她和我们一样正常。
来自柯林斯例句
2. That's not the way to do it, you crackpot.
不是那样做的蠢材.
来自辞典例句
3. He was prone to dismiss himself as " that well - known crackpot ".
