D defs.my
Entry 2 senses Webster, 1913

spaceman

· space·man · IPA /ˈspeɪsˌmæn/
01 n. an astronaut.
  1. 1.
    an astronaut. See: astronaut
  2. 2.
    an intelligent creature from outer space; an extraterrestrial; -- a fictional or hypothetical being, never actually observed.