cordon

noun

1. a line of police, sentinels, military posts, warships, etc., enclosing or guarding an area.
2. a cord or braid worn for ornament or as a fastening.
3. a ribbon worn usually diagonally across the breast as a badge of a knightly or honorary order.
4. Fortification.
   1. a projecting course of stones at the base of a parapet.
   2. the coping of a scarp.
5. Architecture.
   1. a stringcourse, especially one having little or no projection.
   2. a cut-stone riser on a stepped ramp or the like.
6. a fruit tree or shrub trained to grow along a support or a series of such supports.

verb (used with object)

7. to surround or blockade with or as with a cordon (usually followed by off): The police cordoned off the street.

noun

1. a chain of police, soldiers, ships, etc, stationed around an area
2. a ribbon worn as insignia of honour or rank
3. a cord or ribbon worn as an ornament or fastening
4. Also called: string course, belt course, table architect an ornamental projecting band or continuous moulding along a wall
5. horticulture a form of fruit tree consisting of a single stem bearing fruiting spurs, produced by cutting back all lateral branches

verb

6. (tr often foll by off) to put or form a cordon (around); close (off)