lunette
‘shape of a semi-circle’
Lexical development traced from the Tamil root:
E. lunet(t) < F. lunette ‘little moon’ < lune ‘moon’ < Lat. luna ‘moon, goddess of the moon’ < leuksna- < loo < leuk- < Tamil el
Guillotine: the circular hole which receives the neck of the victim; Weaponry: a forked iron plate into which the stock of a field-gun carriage is inserted.