Definition of "demilune" in English

adjective

1. (architecture, furniture) In the shape of a half-moon, i.e. semicircular.

noun

1. (military, architecture) A fortification constructed beyond the main ditch of a fortress, and in front of the curtain between two bastions, intended to defend the curtain; a ravelin.

2. (biology) A crescentic mass of granular protoplasm present in the salivary glands.