1. people who design, build, or operate rockets
2. enthusiasts or hobbyists who work with model rockets

Examples

• The rocketeers at NASA worked tirelessly to prepare for the Mars mission.
• Young rocketeers gathered at the field to launch their model rockets.
• The team of experienced rocketeers designed a new propulsion system.
• Amateur rocketeers often start with simple kits before building their own designs.
• The conference brought together rocketeers from around the world.
• These rocketeers have been testing rockets since they were teenagers.