n.
1.a metallic element of the rare earth group
2.infection transmitted by inhalation or ingestion of tubercle bacilli and manifested in fever and small lesions (usually in the lungs but in various other parts of the body in acute stages)
3.a unit of information equal to a trillion (1,099,511,627,776) bytes or 1024 gigabytes
Idiom of the Day
know-it-all
a person who acts as if he or she knows everything
The librarian is a know-it-all and nobody likes to be around him.