Определение слова «buy it» на английский

Verb

To die.
- He bought it in a shootout.
To believe any particular assertion or idea; to support it.
- He claims that he'll pay me back, but I don't buy it.
- He was claiming that he'd pay her back, but she wasn't buying it.
- He had been talking up a storm about diversification of assets, and clearly they had bought it.