Sentinel

What “Sentinel” means

Noun

1. A sentry, watch, or guard.
2. A private soldier.
3. A unique value recognised by a computer program for processing in a special way, or marking the end of a set of data.
4. A sentinel crab.
5. A sign of a health risk (e.g. a disease, an adverse effect).

Verb

1. To watch over as a guard.
2. To post a guard for.

Where the word comes from

First attested in the 1570s from Middle French sentinelle (“watch or guard kept by a soldier”), from Old Italian sentinella, probably from sentina + -ella, from sentire (“perceive, watch, hear”), from sentiō (“feel, perceive by the senses”). See also sense, sentient.

Business name ideas with “Sentinel”

Industries where “Sentinel” fits

We suggest this word for 3 business types and industries, including:

• Cybersecurity Company
• Security Company
• Security Guards and Patrol Services