Scutage
The tax of scutage or escuage, in the law of
England under the
feudal system, allowed a knight to "buy out" of the military service due to the Crown from the holder of a knight's fee. Its name derived from the knightly shield (in Latin: scutum). The term sometimes loosely applies to other pecuniary levies on the basis of the
knight's fee.
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Scutage
(n.)
Shield money; commutation of service for a sum of money. See Escuage.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
About
Scutage
Fee paid for a
knight or
man-at-arms to avoid military service specified in the terms under which they hold a
fiefdom . 
Scutage
old Eng. law. Tax imposed on Knights in lieu of military service. Used by the King of England in the late Middle Ages as a form of revenue to hire mercenaries.
The name of a tax or contribution raised for the use of the king's armies by those who held lands by knight's service.
This entry contains material from Bouvier's Legal Dictionary, a work published in the 1850's.
scutage