Senses
大爷/ 大爺 elderly man
respectful form of address for an older man of one's father's generation or older
大爷/ 大爺 uncle
one's father's elder brother
大爷/ 大爺 arrogant person
a self-centered show-off or an arrogant idler who avoids work and lives in luxury; someone with a sense of entitlement
大爷/ 大爺 master
(literary) a term of address for a master by a servant; also used for the eldest brother among siblings or as a respectful term for a high-ranking official or rich man
大爷/ 大爺 grand-uncle
one's grandfather's elder brother