picket

A person employed to keep watch for some anticipated event.

A form of military punishment used by the British in the late 17th century in which a soldier was forced to stand on one foot on a pointed stake.

A wooden strip forming part of a fence.

A detachment of troops guarding an army from surprise attack.

A protester posted by a labor organization outside a place of work.

A vehicle performing sentinel duty.

Fasten with a picket.

“picket the goat”

Serve as pickets or post pickets.

“picket a business to protest the layoffs”