noun
outer enclosure; outer fence; outer block
Refers to the outermost surrounding structure or area, such as a fence, wall, or designated block. Often used in architectural, urban planning, or military contexts.
城の外郭は石垣で囲まれている。
The outer enclosure of the castle is surrounded by stone walls.
外郭団体とし
As an outer-block organization, it supports the city's projects.
noun
Used for the outer shape or boundary of an object, plan, or concept. Less common than sense 1 and often replaced by 輪郭 (りんかく) in everyday language.
計画の外郭だけを説明した。
I explained only the outline of the plan.