| Noun | 1. | touchdown - a score in American football; being in possession of the ball across the opponents' goal linescore - the act of scoring in a game or sport; "the winning score came with less than a minute left to play" American football, American football game - a game played by two teams of 11 players on a rectangular field 100 yards long; teams try to get possession of the ball and advance it across the opponents goal line in a series of (running or passing) plays |
| 2. | touchdown - a landing (as the wheels touch the landing field); especially of airplaneslanding - the act of coming down to the earth (or other surface); "the plane made a smooth landing"; "his landing on his feet was catlike" |