From WordNet (r) 3.0 (2006):
sire
n 1: a title of address formerly used for a man of rank and
authority
2: the founder of a family; "keep the faith of our forefathers"
[syn: forefather, father, sire]
3: male parent of an animal especially a domestic animal such as
a horse
v 1: make children; "Abraham begot Isaac"; "Men often father
children but don't recognize them" [syn: beget, get,
engender, father, mother, sire, generate, bring
forth]