touchdown

(Canadian, countable, uncountable) A six-point score occurring when the ball enters possession of a team's player in the opponent's end zone.
(countable, uncountable) A defensive action of grounding the ball in the team's own in-goal to stop the play.
(countable, uncountable) A try (scoring play of grounding the ball in the opposing team's in-goal).
(countable, uncountable) The moment when an aircraft or spacecraft makes first or final contact with the ground during a landing.
(countable, uncountable) The moment of contact of a tornado with the ground.