grandad

 
Pronunciation: /ˈgrandad/
(also granddad)

noun

  • 1 informal one’s grandfather.
  • used as a form of address to an elderly man: cheer up, grandad, it may never happen
  • 2 [as modifier] denoting a style of shirt or shirt neckline with a collar in the form of a narrow upright band fastened with buttons.

Spelling help

Grandad can also be spelled granddad, with an extra d: both are correct.