A member of a crew, as on a ship or spacecraft(noun)
A person in charge of locating the technical crew for a media production(noun)
A competitive rower(noun)
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Use "crewer" in a sentence
"A crewer roster was next, with particular attention given to which servitors were on duty at the moment and which cabins they were assigned to."
"That knowledge in hand, she slipped back through the nearest crewer door and made her way down to the maids 'quarters."
"There were two of them waiting as Jereko Kosta climbed awkwardly up the ladder through the shuttle hatch: a young ensign and an equally young crewer second class, both clothed in shiny black and silver Pax military uniforms, the glistening red and blue threads of the Komitadji's insignia pattern swirling with arrogant pride across collarbone and shoulder."