Definitions for "SENTINELS"
five magical creatures of the Prophecy of the Destroyer. Originally Charonites, they were recruited by WolfStar (in his guise of the Prophet) in order to serve the Prophecy. They gave their lives to form the Rainbow Sceptre and now drift through the stars.
sensitive organisms introduced into the environment as an early-warning device
Organisms that are particularly sensitive to environmental contamination, diseases, or other conditions being studied.