A person or group of persons present outside a building to protest.
The definition of a scout is someone sent out to get information, or a member of the Girl Scouts or Boy Scouts.
A period of close observation, often in order to discover something:
The duty of a sentry; watch.
An honor guard.
Any person under another's protection or care
Safety is a state of being protected from potential harm or something that has been designed to protect and prevent harm.
Find another word for sentinels. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for sentinels, like: pickets, scouts, watches, sentries, guards, watchmen, patrols, wards and safeties.