1) Crescent 
• (n.) 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. • (n.) A crescentic mass of granular protoplasm present in the salivary glands.
1. 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. <physiology> A crescentic mass of granular protoplasm present in the salivary glands. ... Each crescent is made of polyhedral cells which under some circumstances are suppo...
(dem´e-lldbomacn) crescent (def. 2).
Dem'i·lune` noun [ French demi- lune .] 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 ...
Type: Term Pronunciation: dem′ē-lūn Synonyms: demilune body
A gemstone that is shaped like a half moon
demilune 1. A half-moon, a crescent. 2. Crescent-shaped; semilunar. 3. A crescent-shaped cell; such as, one of the serous cells of the submandibular salivary gland.
a crescent. · an outwork resembling a bastion with a crescent-shaped gorge. · a crescent or half-moon shape, as of the top of a piece of furniture.