valsalva manoeuvre. The effort to breathe out forcibly while the mouth and nose are firmly closed or the vocal cords pressed together. The valsalva manoeuvre is employed while straining at stool and in other circumstances. It causes a rise in blood pressure followed by a sharp drop and then a second sharp rise in blood pressure.
A device used to grind coffee beans. verb. To grind is defined as to crush, reduce to a powder using friction or to rub two surfaces together forcefully. An example of to grind is using a mortar and pestle to turn cumin seeds into cumin powder.
Bruxism, also called teeth grinding, is when a person grinds, grates, or clenches their teeth. The teeth hit together forcefully, sometimes making a lot of noise. Many people grind at night and are not aware they are doing it while it is happening.