Falcon n. : One of a family (Falconidae) of raptorial birds, characterized by a short, hooked beak, strong claws, and powerful flight.

Falcon n. : Any species of the genus Falco, distinguished by having a toothlike lobe on the upper mandible; especially, one of this genus trained to the pursuit of other birds, or game.

Falcon n. : An ancient form of cannon.

Example:
Is it possible to keep a peregrine Falcon as a pet?

Taxonomy
falcon, Falco, species, kestrels, Wink, hobbies, birds, Peregrine, Michael, birds of prey, genus, unjustified, emendation, lineage, family Falconidae, the American, malar stripe, Peregrine Falcons.

Defination from the web:
falcon (pronounced /ˈfɔːlkən/ or /ˈfælkən/) is any species of raptor in the genus Falco. ... The traditional term for a male falcon is tercel (British spelling) or tiercel (American spelling), from Latin tertius = third because of the ...