1 definition by Catherine of Aragon

The act of of simultaneously bolstering the structural defenses of one's fortress and having familiar relations with one or more persons of the opposite sex.
King Henry VIII can attribute his victory at the Battle of Tours to a modernized navy and frantic fornification leading up to and during the battle.

Fred's meticulous fornification was successful in preventing outsiders entrance to his castle but the population still increased by one less than a year later.

When mastered, the skill of fornification can be one's greatest asset.
by Catherine of Aragon January 2, 2010
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