An instrument for measuring blood pressure in the arteries, especially one consisting of a pressure gauge and a rubber cuff that wraps around the upper arm and inflates to constrict the arteries.
i had to go to dictionary.com for this one... I know what it is now, but I can't say it to save my life so I don't know if it sounds dirty or not! lol
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But what do I know, I'm just the developer.