scutage

from The Collaborative International Dictionary of English v.0.48

Scutage \Scu"tage\ (?; 48), n. [LL. scutagium, from L. scutum a
   shield.] (Eng. Hist.)
   Shield money; commutation of service for a sum of money. See
   {Escuage}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Tallage \Tal"lage\, Talliage \Tal"li*age\, n. [F. taillage. See
   {Taille}, and cf. {Tailage}.] (O. Eng. Law)
   A certain rate or tax paid by barons, knights, and inferior
   tenants, toward the public expenses. [Written also {tailage},
   {taillage}.]
   [1913 Webster]

   Note: When paid out of knight's fees, it was called
         {scutage}; when by cities and burghs, {tallage}; when
         upon lands not held by military tenure, {hidage}.
         --Blackstone.
         [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Escuage \Es"cu*age\ (?; 48), n. [OF. escuage, F. ['e]cuage, from
   OF. escu shield, F. ['e]cu. See {Esquire}.] (Feud. Law)
   Service of the shield, a species of knight service by which a
   tenant was bound to follow his lord to war, at his own
   charge. It was afterward exchanged for a pecuniary
   satisfaction. Called also {scutage}. --Blackstone.
   [1913 Webster]

from Bouvier's Law Dictionary, Revised 6th Ed (1856)

SCUTAGE, old Eng. law. 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.