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grandaddy

 - 2 dictionary results
gran·dad·dy   (grān'dād'ē)   
n.  Variant of granddaddy.
grand·dad·dy also gran·dad·dy   (grān'dād'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.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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