1. 
[syn: astronaut, spaceman, cosmonaut]
The Collaborative International Dictionary of English v.0.48:
cosmonaut \cosmonaut\ n. [Russ. kosmonavt from kosmos universe.]
   an astronaut; -- a term used by the Soviets and Russians.
   Syn: astronaut, spaceman.
        [PJC]
The Collaborative International Dictionary of English v.0.48:
astronaut \as"tro*naut\ adj.
   a person trained to travel in a spacecraft; one who travels
   in a spacecraft; -- called in the Soviet Union and Russia
   cosmonaut.
   Syn: spaceman, cosmonaut
        [WordNet 1.5]
WordNet (r) 3.0 (2006):
cosmonaut
    n 1: a person trained to travel in a spacecraft; "the Russians
         called their astronauts cosmonauts" [syn: astronaut,
         spaceman, cosmonaut]