picket

ot noun

1. A stake driven into the ground. a picket fence
2. 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.
3. A type of punishment by which an offender had to rest his or her entire body weight on the top of a small stake.
4. A tool in mountaineering that is driven into the snow and used as an anchor or to arrest falls.

fe’l verb

1. To tether to, or as if to, a picket. to picket a horse
2. To protest, organized by a labour union, typically in front of the location of employment.
3. To enclose or fortify with pickets or pointed stakes.
4. To guard, as a camp or road, by an outlying picket.