A tenant by military service under the rank of a knight; esp. one of this class attending on a knight in the field. Obsolete.

A retainer bound to maintain a hobby for military service; a soldier who rode a hobby, a light horseman. Obsolete exc. Historical.

sergeant-at-arms n. (Also serjeant-at-arms, †sergeant of arms.) †(a) In early use gen.: an armed officer in the service of a lord (cf. sense 1); spec.…