Meaning of sentinel
Pronunciation: (sen'tn-l), [key]
— n., v., -neled, -nel•ing -nelled, -nel•ling.
- a person or thing that watches or stands as if watching.
- a soldier stationed as a guard to challenge all comers and prevent a surprise attack: to stand sentinel.
- Also calleda symbol, mark, or other labeling device indicating the beginning or end of a unit of information.
- to watch over or guard as a sentinel.
- sentinel (Thesaurus)