big' dad'dy
— Informal. (often caps.)Informal.
- a man regarded as the paternalistic head of a family.
- the founder or a leading member of a company, organization, movement, etc.: the big daddy of soil conservation.
- the federal government: to thank big daddy for the tax cut.
- grandfather.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.