Definify.com
Webster 1913 Edition
Demilune
Dem′i-luneˊ
,Noun.
[F.
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 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.