spaceman

noun

1. (childish, informal)An astronaut, often a male astronaut.

   “I want to be a spaceman when I grow up.”

2. (informal)A humanoid extraterrestrial.

   “A spaceman from Mars could easily pick out the most civilized nations here. They are the only ones who know how to make atom bombs.”

   “While in Los Angeles he was contacted by a spaceman from Saturn whose name was Ramu[…]”

   “He was out UFO-hunting in the Mojave Desert, California, when he was greeted by a tall, blond spaceman from Venus”