THERMOMETER

[noun] [C] - a device used for measuring temperature, esp. of the air or in a person's bodyA thermometer is usually a small glass cylinder containing a line of mercury that moves up or down as the temperature rises or falls.Last night the thermometer fell below freezing.(figurative) The official thermometer (= recorded level) of inflation will rise above 5% in August.See pictures: Medical equipment, Meters and gauges