Definition of earthship:
(n) :
(architecture) A solar-heated house made of natural and recycled materials, such as earth-filled tyres.
(n) :
(poetic) The Earth, considered as a spaceship moving through space.
(n) :
(science fiction) A spaceship originating from or belonging to Earth.
(n) :
Alternative form of Earthship. [(architecture) A solar-heated house made of natural and recycled materials, such as earth-filled tyres.]