noun · respectful form of address for an elderly man

大爷，您请坐在这儿吧。

noun · an arrogant person who lives in idleness and expects others to serve them

他在家里就像个大爷，从来不伸手帮着干活。

noun · a self-centered person who puts on airs and acts like a big shot to impress or intimidate others

你别在我面前充大爷，没人会吃你那一套。

noun · father's older brother

我大爷是我爸爸的亲哥哥。