A conventional mark placed in written or printed text to direct the reader's attention especially to a footnote
ETYM French sentinelle (cf. Italian sentinella); probably originally, a litle path, the sentinel's beat, and a dim. of a word meaning, path; cf. French sente path. Latin semita; and Old Fren. sentine, sentele, senteret, diminutive words. Related to Sentry.
1. One who watches or guards.
2. A soldier set to guard an army, camp, or other place.