a fellow member of a crew, especially on an aircraft, ship, or spacecraft.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for crewmate
Historical Examples of crewmate
For a moment the others just stared at their Garvian crewmate.Star Surgeon
a colleague on the crew of a boat or ship
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012