The term 'touchdown site' can be broken down into four crossword solutions: AIRSTRIP (8 letters), AIRPORT (7 letters), TARMAC (6 letters), and endzone (7 letters). An AIRSTRIP is a short runway used for takeoffs and landings of small aircraft. An AIRPORT is a large facility that includes runways, terminals, and other infrastructure for the commercial air travel industry. A TARMAC is a paved surface used for aircraft to taxi, takeoff, and land. Finally, an endzone is an area at either end of a football field where a touchdown is scored.