Definition of grandsire in US English:

grandsire

noun

  • archaic term for grandfather
    • ‘It never occurred to me that you might not realize he was your father or grandfather, or great grandsire or whatever.’
    • ‘‘Cuvee inherited his great speed from his sire, Carson City, and his grandsire, Mr. Prospector,’ Beck said.’
    • ‘To me, you are as loved as my grandsire; not blindly feared and obeyed.’
    • ‘It was a little while after the boy's granddam and grandsire had resigned, and Greni had returned with more grumbling, but looking considerably lighter of mood, that Naoise had noted the boy's inquisitive stares.’
    • ‘‘Then you would know your great grandsires,’ he murmured in an awed voice.’

Pronunciation

grandsire

/ˈɡrandˌsī(ə)r//ˈɡrændˌsaɪ(ə)r/