from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Informal A father.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A father, a male parent.
- n. Used to address one's father
- n. Used to address an older adult male
from the GNU version of the Collaborative International Dictionary of English
- n. Father; -- a word sometimes used by children.
from The Century Dictionary and Cyclopedia
- n. A father; papa.
- To dash; throw; scatter.
- In coal-mining, to mix (fire-damp) with atmospheric air to such an extent that it becomes incapable of exploding.
- To fall forcibly.
- n. A lump; a large piece: as, a dad of bread.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an informal term for a father; probably derived from baby talk
Of baby-talk origin.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle English dadd, dadde, perhaps of Celtic origin, compare Welsh, Breton and Gaelic dad, tad; possibly related to Russian дядя ("uncle"). (Wiktionary)