|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
electrosurgery e·lec·tro·sur·ger·y (ĭ-lěk'trō-sûr'jə-rē)
The surgical use of high-frequency electric current for cutting or destroying tissue, as in electrocauterization.