|a finely calibrated thermometer for determining the temperature of the body, usually placed under the tongue, in the armpit, or in the rectum|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|a gadget; dingus; thingumbob.|
clinical thermometer n.
A thermometer having a graduated glass tube with a bulb containing a liquid, typically mercury or colored alcohol, that expands and rises in the tube as the temperature increases.