allonge, n. [F. allonge, earlier alonge, a lengthening. See Allonge, v., and cf. Lunge.].
A thrust or pass; a lunge. [1913 Webster]
A slip of paper attached to a bill of exchange for receiving indorsements, when the back of the bill itself is already full; a rider. Abbott. [1913 Webster]
allonge, v. i. [F. allonger; à (L. ad) + long (L. longus) long.].