noun
garden watchman; garden keeper
Historical role: a person who guarded or maintained a garden, often in a daimyo's residence or similar estate.
江戸時代、大名屋敷には庭番がいて、庭の手入れと警備をしていた。
In the Edo period, daimyo residences had garden watchmen who maintained and guarded the gardens.
noun
guard of the inner garden
Specifically a guard assigned to the inner garden, often associated with the shogunate's intelligence network (御庭番).
See also: 御庭番
御庭番は、将軍直属の隠密として内庭の警護にあたった。
The oniwaban served as the shogun's direct covert agents, guarding the inner garden.