contour; outline; summary; outline; looks; features
district; quarter; enclosure; area enclosed by earthwork; red-light district
castle; citadel; fortress; castle walls; enclosure
outer fence; outer enclosure; outer block; outline; contour
(licensed) red light district
fortified city; walled city
outline; contour line; border line
purification; cleaning up; purging
auxiliary organization (organisation); extra-departmental body; fringe organization
illusory contour; subjective contour
thoracic outlet syndrome; TOS
outer ring road; orbital road
walled settlement; walled town
gate of a castle's outer enclosure; outer gate