A colloquial or informal term for a grandfather; an alternative or dialectal variation of grandpa or granddad.
From grand- plus a diminutive or colloquial ending -o, common in informal speech. This appears to be a regional or family-specific variation, more prevalent in certain dialects or time periods.
Grando is one of those regional gems that shows how every family develops its own language—it's common in some parts of the UK and Australia but nearly extinct elsewhere, making it a linguistic endangered species!
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