1
- a line or circle of police, soldiers, or guards preventing access from an area or building警戒线; 包围圈：
troops threw a cordon around the headquarters.
部队在指挥部周围布设了警戒线。
2
- a fruit tree trained to grow as a single stem（果树）单干形。
3
- Architecture another term for STRING COURSE.【建筑】同STRING COURSE.
with obj.(cordon something off)
- prevent access to or from an area or building by surrounding it with police or other guards以警戒线包围（或封锁）：
the city centre was cordoned off after fires were discovered in two stores.
在发现两个商店起火后市中心被封锁了。
词源
late Middle English (denoting an ornamental braid worn on the person)： from Italian cordone, augmentative corda, and French cordon, diminutive of corde, both from Latin chorda 'string, rope' （see CORD）. Sense 3, the earliest of the current noun senses, dates from the early 18th cent.