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sentinel

noun
/ˈsɛn.tɪ.nəl/

Etymology

1570s, from Middle French sentinelle, from Old Italian sentinella (perhaps via a notion of "perceive, watch", compare Italian sentire (“to feel, hear, smell”)), from Latin sentiō (“feel, perceive by the senses”). See sense, sentient.

  1. derived from sentiō — “feel, perceive by the senses”
  2. derived from sentinelle

Definitions

  1. A sentry, watch, or guard.

    • the sentinels who paced the ramparts
    • that princes do keep due sentinel

  2. A private soldier.

    • “I will not permit the poorest centinel to be treated with injustice.”

  3. A unique value recognised by a computer program for processing in a special way, or…

    A unique value recognised by a computer program for processing in a special way, or marking the end of a set of data.

    • The <xmp> tag is a sentinel that suspends web-page processing and displays the subsequent text literally
    • […] a sentinel value that indicates a missing entry.
  4. ›+ 5 more definitions

    1. A sentinel crab.

    2. A sign of a health risk (e.g. a disease, an adverse effect).

      • sentinel animals can be used to explore endemic diseases.

    3. To watch over as a guard.

      • He sentineled the north wall.

    4. To post a guard for.

      • He sentineled the north wall with just one man.

    5. A place in the United States

      A place in the United States:

The neighborhood

Vish — recursive loop

No curated loop yet for sentinel. Loops are being traced one word at a time while the ingestion pipeline matures.

sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA