Source : Webster's Revised Unabridged Dictionary (1913)

Losenger \Los"en*ger\, n. [OF. losengier, losengeor, fr.
   losengier to deceive, flatter, losenge, flattery, Pr.
   lauzenga, fr. L. laus praise. Cf. {Lozenge}.]
   A flatterer; a deceiver; a cozener. [Obs.] --Chaucer.

         To a fair pair of gallows, there to end their lives
         with shame, as a number of such other losengers had
         done.                                    --Holinshed.