1630s, "owner, by royal grant, of an American colony," probably from proprietary (n.) in sense "property owner" (late 15c., see proprietary). In general sense of "one who holds something as property" it is attested from 1640s.
双语例句
1. He was the sole proprietor with total management control.
他是唯一业主，掌握全部管理权。
来自柯林斯例句
2. The proprietor was an old acquaint-ance of his.
业主是他的一位旧相识。
来自柯林斯例句
3. He is now sole proprietor of the business.
他现在一个人拥有这家公司.
来自《简明英汉词典》
4. " What a fish it was, " the proprietor said.
“ 多大的鱼呀, " 饭店老板说.
来自英汉文学 - 老人与海
5. " Well, you can suit yourself, Mr. Wheeler,'said the proprietor.