guard(redirected from on guard)
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a protective device.
mouth guard any of various removable intraoral appliances that protect the teeth and sometimes the lips and cheeks during contact sports.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
1. To watch over so as to protect or maintain control.
2. A person or thing performing such a function.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
A device for protecting something (e.g., a mouth guard or a face guard).
A removable dental appliance that covers one or both arches and is designed to minimize the damaging effects of bruxism, jaw and head trauma during contact sports, or any detrimental occlusal habits.See: nightguard; mouth guard
Medical Dictionary, © 2009 Farlex and Partners