Definition of quadrifoil in English:

quadrifoil

adjective

  • Having four lobes, or a four-lobed pattern.

noun

  • Originally: a plant having four leaves arising from a single point. Later: a figure, often used decoratively, representing or resembling this shape; a structure having four lobes.

Origin

Late 18th century; earliest use found in John Berkenhout (?1730–1791), physician and writer. From quadri- + foil.

Pronunciation

quadrifoil

/ˈkwɒdrɪfɔɪl/