1.Definition: a detachment of troops guarding an army from surprise attack

Category: General

2.Definition: 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

Related Noun(s):piquet

Category: General

3.Definition: a person employed to keep watch for some anticipated event

Related Noun(s):lookout, lookout man, scout, sentinel, sentry, spotter, watch

Category: People

4.Definition: a protester posted by a labor organization outside a place of work

Category: People

5.Definition: a vehicle performing sentinel duty

Category: Objects

6.Definition: a wooden strip forming part of a fence

Related Noun(s):pale

Category: Objects