Noun
grampa (plural grampas)
(informal) grandfather
How confusing the beams from memory's lamp are One day a bachelor, the next a grampa. What is the secret of the trick How did I get so old so quick. Ogden Nash
Casy attributes his death to a stroke but says that Grampa is "jus' stayin' with the lan'. Source: Internet
However, since Atari did not sign an agreement with Universal, they could not call him "Grampa Munster"; he was simply called "Grampa". Source: Internet
Years later, during the early seasons of The Simpsons, when it came time to give Grampa a first name, Groening says he refused to name him after his own grandfather, Abraham Groening, leaving it to other writers to choose a name. Source: Internet