'Grandpa' definitions:
Definition of 'grandpa'
From: WordNet
noun
The father of your father or mother [syn: grandfather, gramps, granddad, grandad, granddaddy, grandpa]
Definition of 'Grandpa'
From: GCIDE
- Grandpa \Grand"pa"\, Grandpapa \Grand"pa*pa"\, n. A grandfather. [1913 Webster]