keep watch

: to retain in one's possession or power

: to refrain from granting, giving, or allowing

: to have in control

: the means or provisions by which one is kept

: one that keeps or protects: such as

: fortress, castle

: to keep vigil as a devotional exercise

: to be awake during the night

: to be attentive or vigilant

: the act of keeping awake to guard, protect, or attend

: the state of being wakeful

: a wake over a dead body