use sentinel in a sentence.
I do have a veterinarian friend who has what he calls a sentinel cat.
Lieutenant Hayward treated him with a sort of contemptuous look, and began to enter into conversation with him respecting the _Bounty_, but I called the sentinel in to take them into custody, and ordered Lieutenant
"Oh, this isn't a co-op exactly, and it's not like, uh, the Guardian Angels, except for what they call sentinel stance, and - It's sort of like a church, except not that either.
These days, Spencer is busier than usual: she's moonlighting as a "sentinel" -- one of 80 or so doctors who sends a regular tally of fevers and raspy coughs to New York City's health department.
The biopsy procedure known as sentinel lymph node SLN dissection has been praised for averting the removal of large numbers of armpit lymph nodes during breast cancer surgery, which can lead to a painful buildup of fluid called lymphedema.