Definition of "oxygen mask" []

• A masklike device placed over the mouth and nose and through which oxygen is supplied from an attached storage tank. (noun)

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.

• "Eight hours later Jan Pankey lay prone on a gurney inside the Albuquerque Regional Medical Center ER in severe pain, breathing through an oxygen mask while a technician performed a scan of her chest."
• "Joy Stinnet said, just as the young paramedic slid an oxygen mask over her face."
• "There are so many to choose from, I like to mix it up and do a cleansing one night, a lifting mask another, an oxygen mask a different nightyou get the picture."