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lock

 [lok]
1. a place, often airtight, where something is sealed in.
2. a device such as a clamp for holding something firmly in place.
heparin lock see heparin lock.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

lock

(lok),
A device for holding or closing.
Farlex Partner Medical Dictionary © Farlex 2012

lock

Vox populi A device that prevents a particular action or activity. See Bloxham air lock, Heparin lock, Job lock, Vapor lock.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

lock

(lok)
1. An enclosing, fastening, or securing device.
2. A mechanism that, when moved, permits or obstructs passage.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
"I get call outs for gaining entry into domestic and commercial premises, car lock outs, key cutting, replacing locks as well as boarding up properties."
1:30am lock outs, bars and clubs, and 3am last drinks now in place.
The company, which is AAA-contracted and handles services such as lock outs, jump starts and tire changes as well as towing, is leasing office space at 346 Sunset Highway from Rod Haverfield, across from the Crunch Pak offices.