Definition of "onboard" []

• Carried or used aboard a vehicle or vessel: onboard radar systems. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Vice Admiral Samarasinghe emphasized the importance of deploying what he called onboard security teams to protect ships vulnerable to attack."
• "The 49 passengers and 2 children held on laps were forced to remain onboard overnight with little food or water and a smelly toilet."
• "Everyone equipped to respond gets the willies and eventually discover everyone onboard is dead for unknown reasons."