noun
1.
Synonyms: guard 2, picket, sentinel, sentry, ward, watch, watchman
2.
an elevated place affording a wide view for observation
guards posted at a lookout to watch for enemy troops entering the valley
Synonyms: observatory, outlook, overlook
Related Word: watchtower; crow's nest; cupola, widow's walk; fire tower
3.
a careful looking or watching
kept a constant lookout for new developments
Synonyms: surveillance, tout, vigil, vigilance, watch, watch and ward
Related Word: observance, observation
4.
Synonyms: vista , outlook, perspective, prospect, scape
5.
Synonyms: business 8, affair, concern, occasions, palaver