Definition of "crewless" []

• Without a crew; unmanned. (adjective)

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• "Reindeer, crewless, lay across the estuary at the sandspit."
• "A crewless shuttle orbiter would probably carry about one third as much cargo as shuttle-C but the development costs would surely be much lower."
• "The idea involved a cargo module, a wingless, crewless version of the shuttle, powered by the shuttle's liquid-fueled engines and clamped to the giant fuel tank and solid rocket boosters used by the shuttle."