|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.|
policeman po·lice·man (pə-lēs'mən)
An instrument, usually a rubber-tipped rod, for removing solid particles from a glass container.