Sire (noun)

1. A title of address for a man, especially one in a position of authority.
2. A term of endearment for a male parent or grandfather.
3. An animal's male parent.

Origin:

Middle english (denoting a lord or ruler): from old french sire, from latin senior 'elder'. the verb sense (late 16th century) comes from the noun.

Examples:

1. The villagers addressed the king as Your Majesty and Sire.
2. He was called Sire by his grandchildren.
3. The sire of the racehorse was a thoroughbred.
4. I have come to seek your help, O wise Sire.
5. Sire, I have a proposal for you.