touchdown

Etymology

touch + down.

noun

1. (American football, Canadian football) 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.
2. (rugby) A defensive action of grounding the ball in the team's own in-goal to stop the play.
3. (rugby) 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. February 13, 2011, Lyle Jackson, “Ireland 22-25 France”, in BBC
4. (aviation) 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[…] 17 April 1972, Elton John, Bernie Taupin, “Rocket Man”, in Honky Château, performed by Elton John
5. 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. 2003, Jessica McNew, Eyes in a Storm