granddaddy(redirected from granddaddies)
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grand·dad·dyalso gran·dad·dy (grăn′dăd′ē)
n. pl. grand·dad·dies also gran·dad·dies Informal
1. A grandfather.
2. One that is the first, oldest, or most respected of its kind: the granddaddy of modern computers.
grand•fa•ther(ˈgrænˌfɑ ðər, ˈgrænd-)
1. the father of one's father or mother.
2. a male ancestor.