1. grandfather; grandpa (informal, chiefly North American)
Usage: informal; chiefly used by children or in family contexts

Examples

• My grampy taught me how to fish when I was little.
• Grampy always has candy in his pockets for us.
• We visit grampy every Sunday for dinner.
• Grampy told us stories about the old days.
• I love spending time with my grampy in the garden.