|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|the offspring of a zebra and a donkey.|
barbiturate bar·bi·tu·rate (bär-bĭch'ər-ĭt, -ə-rāt', bär'bĭ-t&oobreve;r'ĭt, -āt', -ty&oobreve;r'-)
A salt or ester of barbituric acid.
Any of a group of barbituric acid derivatives that act as central nervous system depressants and are used as sedatives or hypnotics.
|barbiturate (bär-bĭch'ər-ĭt) Pronunciation Key
Any of a group of drugs that act as depressants of the central nervous system, are highly addictive, and are used primarily as sedatives and anticonvulsants. Phenobarbital and pentobarbital are examples of barbiturates.