Definition of precarium in US English:

precarium

noun

  • 1Roman Law and Scottish Law (now historical). A loan granted on request but revocable whenever the lender wishes.

  • 2Medieval History. A grant of land for life in return for military services.

Origin

Late 17th century; earliest use found in James Dalrymple. From classical Latin precārium a thing granted or lent upon request at the will and pleasure of the grantor, property held during the pleasure of the superior, use as noun of neuter of precārius, adjective.

Pronunciation

precarium

/prɪˈkɛːrɪəm/