- 1a person or thing that you are annoyed with My car's at the shop—the son of a gun broke down again.
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- 2used to express the fact that you are surprised or annoyed Well, son of a gun—and I thought the old guy couldn't dance!
- 3(old-fashioned) used by a man to address or talk about a male friend that he admires and likes Frank, you old son of a gun—I haven't seen you for months.
Check pronunciation: son of a gun