sentinel
Use Sentinel in a sentence
sen·ti·nel
[sen-tn-l] noun, verb, sen·ti·neled, sen·ti·nel·ing or ( especially British ) sen·ti·nelled, sen·ti·nel·ling. 
tn noun
1.
a person or thing that watches or stands as if watching.
2.
a soldier stationed as a guard to challenge all comers and prevent a surprise attack: to stand sentinel.
3.
Also called tag. Computers. a symbol, mark, or other labeling device indicating the beginning or end of a unit of information.
verb (used with object)
4.
to watch over or guard as a sentinel.
Origin:
1570–80; < Middle French sentinelle < Italian sentinella, derivative of Old Italian sentina vigilance (Latin sent(īre) to observe) + -īna -ine2)
1570–80; < Middle French sentinelle < Italian sentinella, derivative of Old Italian sentina vigilance (Latin sent(īre) to observe) + -īna -ine2)
Related forms
sen·ti·nel·like, adjective
sen·ti·nel·ship, noun
un·sen·ti·neled, adjective
un·sen·ti·nelled, adjective
Synonyms
1, 2. sentry, guard, watch, lookout.
1, 2. sentry, guard, watch, lookout.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source
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Link To sentinel
00:10
Sentinel
is one of our favorite verbs.
So is fletcherise. Does it mean:
| to chew (food) slowly and thoroughly. |
| to spend time idly; loaf. |
Collins
World English Dictionary
sentinel (ˈsɛntɪnəl) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| 1. | a person, such as a sentry, assigned to keep guard |
| 2. | computing a character used to indicate the beginning or end of a particular block of information |
| —vb , -nels, -nelling, -nelled | |
| 3. | to guard as a sentinel |
| 4. | to post as a sentinel |
| 5. | to provide with a sentinel |
| [C16: from Old French sentinelle, from Old Italian sentinella, from sentina watchfulness, from sentire to notice, from Latin] | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History
sentinel
1579, from M.Fr. sentinelle, from It. sentinella, perhaps (via a notion of "perceive, watch"), from sentire "to hear, perceive," from L. senire "feel" (see sense).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Another phrase used to describe this is a sentinel headache.
Nearby Words
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