to behave or speak too confidently because you think that you are very important, in order to attract other people's attention and admiration

Just because you won, there's no need to swank. 没必要因为赢了就四处夸耀。

People around here don't swank about their money. 这里的人不会炫耀自己的钱财。

behaviour that is too confident

In spite of all his swank, he's never really achieved very much. 虽然他喜欢卖弄，但他从来都没取得多大成就。