'Prolonge' definitions:

Definition of 'prolonge'

From: WordNet
noun
A rope fitted with a hook and used for towing a gun carriage

Definition of 'Prolonge'

From: GCIDE
  • Prolonge \Pro*longe"\, n. [F. See Prolong.] (Field Artillery) A rope with a hook and a toggle, sometimes used to drag a gun carriage or to lash it to the limber, and for various other purposes. [1913 Webster]