sire in WordNet English dictionary

1. make children
   "Abraham begot Isaac"; "Men often father children but don't recognize them"
   beget  get  engender  father  mother  sire  generate  bring forth 
   

1. the founder of a family
   "keep the faith of our forefathers"
   forefather  father  sire 
   
2. male parent of an animal especially a domestic animal such as a horse
   sire 
   
3. a title of address formerly used for a man of rank and authority
   sire