Definition of orillon in English:

orillon

(also orillion)

noun

Fortification
historical
  • A projecting tower or shoulder at the corner of a bastion, between the face and a flank, used to defend the flank.

Origin

Mid 17th century; earliest use found in Charles Cotterell (1615–1701), courtier and translator. From Middle French, French oreillon, orillon from oreille ear + -on.

Pronunciation

orillon

/ɒrɪˈjɒ̃/