Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun lunette

2 senses of lunette

Sense 1
lunette -- (temporary fortification like a detached bastion)
       => fortification, munition -- (defensive structure consisting of walls or mounds built around a stronghold to strengthen it)

Sense 2
lunette, fenestella -- (oval or circular opening; to allow light into a dome or vault)
       => opening -- (a vacant or unobstructed space that is man-made; "they left a small opening for the cat at the bottom of the door")