n.
1.a unit of magnetic flux density equal to one weber per square meter
2.United States electrical engineer and inventor (born in Croatia but of Serbian descent) who discovered the principles of alternating currents and developed the first alternating-current induction motor and the Tesla coil and several forms of oscillators (1856-1943)
Idiom of the Day
wait up (for someone)
to not go to bed until someone arrives or something happens
The woman always waits up for her daughter when she comes home late at night.