a line of pointed wooden strip that is fixed in the ground to form a fence
a detachment of troops guarding an army from surprise attack
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 vehicle performing sentinel duty
a protester posted by a labor organization outside a place of work
fasten with a picket
serve as pickets or post pickets