ether
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.