SENTINEL, sen'ti-nel, _n._ a soldier or soldier-marine at a point with the
duty of watching for the approach of an enemy, or guarding the gun-park,
camp, magazine, or other locality: a sentry.--_adj._ acting as a
sentinel.--_v.t._ to watch over, as a sentinel.--_adj._ SEN'TINELLED,
furnished with a sentinel.--SENTINEL CRAB, a crab of the Indian Ocean with
long eye-stalks. [Fr. _sentinelle_--It. _sentinella_, a watch, prob. the L.
_sentinator_, one who pumps bilge-water out of a ship--_sentina_, the hold
of a ship. Others explain Fr. _sentinelle_ as a dim. of _sentier_, a
path--Low L. _semitarius_--L. _semita_, a footpath.]
SENTISECTION, sen-ti-sek'shun, _n._ painful vivisection--opp. to
_Callisection_.
SENTRY, sen'tri, _n._ a sentinel: a soldier on guard to observe the
approach of danger: a watch-tower.--_ns_ SEN'TRY-BOX, a box to shelter a
sentry; SEN'TRY-GO, any active military duty. [Prob. a corr. of
_sentinel_--Low L. _semitarius_--L. _semita_, a path.]
SENVY, sen'vi, _n._ (_obs._) mustard-seed. [O. Fr. _seneve_--L.
_sinapi_--Gr. _sinapi_, mustard.]