'Castle-guard' definitions:

Definition of 'Castle-guard'

From: GCIDE

Castle-guard \Cas"tle-guard`\, n.
1. The guard or defense of a castle. [1913 Webster]
2. (O. Eng. Law) A tax or imposition an a dwelling within a certain distance of a castle, for the purpose of maintaining watch and ward in it; castle-ward. [1913 Webster]
3. A feudal tenure, obliging the tenant to perform service within the realm, without limitation of time. [1913 Webster]