Oilman (noun)

1. A person who is engaged in the business of extracting, producing, and selling oil.
2. A person who owns or operates an oil well, oil field, or oil company.

Origin:

The word "oilman" is derived from the combination of the words "oil" and "man". it first appeared in the early 20th century, as the oil industry began to expand.

Examples:

1. He was an experienced oilman, having worked in the industry for over 30 years.
2. The oilman made his fortune by drilling for oil in Texas.
3. The oilman was able to successfully navigate the volatile oil markets.
4. The oilman's company was responsible for discovering several large oil fields in the region.
5. The oilman's wealth allowed him to live a luxurious lifestyle.