n.
1.a colorless volatile highly inflammable liquid formerly used as an inhalation anesthetic
2.the fifth and highest element after air and earth and fire and water
3.any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom
4.a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves
Idiom of the Day
water down (something) or water (something) down
to make something weak, to dilute something
The new policy is a watered down version of the old one.