Castle-guard
Pronunciation : Cas"tle-guard`
Part of Speech : n.
Definition : 1. The guard or defense of a castle.
2. (O. Eng. Law)
Defn: 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.
3. A feudal tenure, obliging the tenant to perform service within the realm, without limitation of time.
Source : Webster's Unabridged Dictionary, 1913