plural sires
1
—used formerly to address a man of rank or authority (such as a king or lord)
Your horses are ready, sire. [=my lord]
2
technical
: a male parent of some animals (such as dogs and horses)
the foal's sire
sires; sired; siring
1
of an animal
: to become the father of (an animal)
The horse sired several champion racers.
2
old-fashioned
: to become the father of (a child)
He sired [=fathered] six children.
Cite this Entry
“Sire.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/sire. Accessed 28 Jul. 2026.
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