demilune Meaning, Definition & Usage

Dem"i*lune` noun
Etymology
F. demi-lune.
Definitions
  1. (Fort.) A work constructed beyond the main ditch of a fortress, and in front of the curtain between two bastions, intended to defend the curtain; a ravelin. See Ravelin.
  2. (Physiol.) A crescentic mass of granular protoplasm present in the salivary glands. ✍ Each crescent is made of polyhedral cells which under some circumstances are supposed to give rise to new salivary cells.

Webster 1913