This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The landing of a spacecraft or missile in water.

n. The landing of a space capsule on water (which causes a splash as it comes down).

n. a landing of a spacecraft in the sea at the end of a space flight

"My mind can even assimilate the concept of a spaceship slingshoting around the moon and returning home to splashdown and glory."

landing   

leadscrew    mod_python    pen-lift    bellyband    single-axle