ether

(noun, verb)

noun

1. the fifth and highest element after air and earth and fire and water; was believed to be the substance composing all heavenly bodies

Similar word(s): quintessence

Definition categories: substance, element

2. any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom

Definition categories: substance

3. a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves

Similar word(s): aether

Definition categories: communication, medium

4. a colorless volatile highly flammable liquid formerly used as an inhalation anesthetic

Similar word(s): ethoxyethane

Definition categories: man–made

verb

1. (transitive, slang) To viciously insult.

- The battle rapper ethered his opponent and caused him to slink away in shame.