Spaceman (noun)

1. A person who travels in space, especially an astronaut in a spacecraft.
2. A fictional character in science fiction, often associated with space travel or living on other planets.

Origin:

Derived from 'space' and 'man', first used in the mid 20th century to describe astronauts.

Examples:

1. Neil Armstrong was the first spaceman to set foot on the moon.
2. The spaceman floated weightlessly inside the spaceship, conducting experiments.
3. The children were captivated by the spaceman's tales of life in space.
4. The spaceman suit was specially designed to protect the astronaut from the harsh conditions of space.
5. The spaceman's mission was to gather data and samples from the planets he visited.