touchdown

noun

1. (Canadian, countable, uncountable)A six-point score occurring when the ball enters possession of a team's player in the opponent's end zone.

   “Today I scored my first touchdown.”

   ““I must have caught 45 or 50 touchdowns in that right corner,” he told The Baltimore Sun in 2009. “It was sloped some, a little downhill, which helped me speedwise. I wasn’t all that fast.””

2. (countable, uncountable)A defensive action of grounding the ball in the team's own in-goal to stop the play.
3. (countable, uncountable)A try (scoring play of grounding the ball in the opposing team's in-goal).

   “A first Test try by Fergus McFadden and a Tomas O'Leary touchdown helped Ireland to a 15-12 half-time lead.”

4. (countable, uncountable)The moment when an aircraft or spacecraft makes first or final contact with the ground during a landing.

   “The passengers audibly relaxed at touchdown.”

   “And I think it's gonna be a long, long time / 'Til touchdown brings me 'round again to find / I'm not the man they think I am at home / Oh, no, no, no[…]”

5. (countable, uncountable)The moment of contact of a tornado with the ground.

   “The American Red Cross sent me to Alabama within twenty-four hours of the tornado's touchdown, and I visited the communities of Oak Grove and Rock Creek four subsequent times.”