0 an occasion when two people, companies, etc. compete with each other in order to win or achieve something :
Early episodes suggest that his actions will lead to the mother of all smackdowns, with no clear winner.
The situation became a full-blown smackdown between three federal agencies - Homeland Security, State Department, and the Department of Defense.
A smartphone smack-down is brewing.
have you not learned by now that smugness will get you nothing so quick as a karmic smackdown?
Does the fact that Connor received a smack-down mean he will back off?
The Republicans' across-the-board smackdown of the motion indicated the party's unity, he said.
Human rights and civil liberties groups see this decision as a long overdue presidential smack-down that recognizes the basic right of everybody in the United States to due process.