- 老大哥 lǎodàgē elder brothera respectful form of address for a man of one's own generation who is older than oneself; also used to refer to an experienced or leading member of a group
- 大哥大 dàgēdà mobile phonean early model cellular phone, especially a bulky or "brick" style phone
- 榜一大哥 bǎngyīdàgē top donorThe highest-ranking donor or biggest spender on a live stream, often listed at the top of the streamer's gift rankings.