(linguistics, uncountable) The reconstructed ancestor language or protolanguage of the Indo-European family of languages, which includes most European, Iranian, and Indian languages.

(anthropology, countable) A person who spoke the Proto-Indo-European language.

(linguistics, anthropology) Of or pertaining to the Proto-Indo-European language, or the people who spoke it.

The human experience of feeling a sudden sense of insight upon making a discovery or realization.

(idiomatic) The moment of a sudden unexpected discovery.

An exclamation indicating sudden discovery.

Synonym of constantan (“copper-nickel alloy”)

(slang, derogatory) An employee or minister of the European Union, typically working in Brussels or Strasbourg.

Of or pertaining to the continent of Eurasia, or to both Europe and Asia. / Having mixed European and Asian ancestry.

Any person native to Eurasia, or descended from people native to Eurasia. / A person of mixed European and Asian ancestry. / (dated) A person of European ancestry born in Asia.