A thermometer used to measure body temperature, especially a small glass thermometer designed with a narrowing above the bulb so that the mercury column stays in position when the instrument is removed from the body.体温计：用于测量体温的温度计，尤指一种小型玻璃温度计，其管柱上有一条狭缝，当将其拿离身体时水银柱会固定于某一位置