A stake driven into the ground.
a picket fence
A type of punishment by which an offender had to rest his or her entire body weight on the top of a small stake.
A tool in mountaineering that is driven into the snow and used as an anchor or to arrest falls.
One of the soldiers or troops placed on a line forward of a position to warn against an enemy advance; or any unit (for example, an aircraft or ship) performing a similar function.
(sometimes figurative) A sentry.
A protester positioned outside an office, workplace etc. during a strike (usually in plural); also the protest itself.
Pickets normally endeavor to be non-violent.
The card game piquet.