Boast is a verb that means to talk with excessive pride and self-satisfaction about one's achievements, possessions, or abilities.
It can also mean to possess (a feature that is a source of pride).
As a noun, boast refers to an act of boasting or a source of pride.
Common expressions with boast:
1. "Don't boast about your money" - 别显摆你有钱
2. "The town boasts a beautiful lake" - 这个镇子有个特别美的湖
3. "His biggest boast is his collection" - 他最得意的就是他那个收藏