WordNet (r) 3.0 (2006):

spaceship
    n 1: a spacecraft designed to carry a crew into interstellar
         space (especially in science fiction) [syn: starship,
         spaceship]

Moby Thesaurus II by Grady Ward, 1.0:

32 Moby Thesaurus words for "spaceship":
   Earth insertion, LEM, LM, apogee, attitude-control rocket,
   ballistic capsule, burn, capsule, deep-space ship, docking,
   docking maneuver, ferry rocket, fuel ship, injection, insertion,
   lunar excursion module, lunar module, manned rocket, module,
   moon ship, multistage rocket, orbit, parking orbit, perigee,
   reentry, rocket, shuttle rocket, soft landing, space capsule,
   space docking, space rocket, spacecraft