big daddy
noun1
Informal A man of importance by reason of power, size or seniority.
2
Informal In the southern United States, the male head of a household; sometimes a grandfather.
3
Informal A stud; a handsome, well-built man.
4
Figuratively, Informal Something large, powerful, or superlative.
- The basic 10K, known as a tenner or studio 10K, has a 20-inch fresnel. The big daddy of the group is the Big Eye tenner, which has a 24-inch lens.2008, Blain Brown, Motion Picture and Video Lighting, page 11: