watch-n; 6 Senses

Sense Number 1: a portable timepiece

Commentary: WATCH[+artifact][+tool][+timepiece][+portable]

Examples:
The salesclerk showed Sally several styles of women's watches.
The man wore a watch on a gold chain clipped to his vest pocket.
John replaced the battery in his watch.

Mappings:
PropBank: NM
WordNet 3.0 Sense Numbers: 1

Sense Number 2: a fixed period of duty, usually on a ship

Commentary: WATCH[+span][+temporal][+period][+fixed][+of_duty]

Examples:
We sailed around the clock, each taking a three-hour watch while the others rested.
The ship's log recorded no incidents during the second watch of the night.
He didn't want such a failure to happen on his watch. (metaphoric extension to a job for which one is responsible)

Mappings:
PropBank: NM
WordNet 3.0 Sense Numbers: 2, 4

Sense Number 3: surveillance, close observation

Commentary: WATCH[+event][+observation][+surveillance]

Examples:
The FBI is keeping a close watch on two suspected terrorists.
The government kept a close watch on the man's overseas business transactions.
You need to keep a careful watch on the engine temperature because it might overheat.

Mappings:
PropBank: watch.01
WordNet 3.0 Sense Numbers: 3

Sense Number 4: care-taking vigil

Commentary: WATCH[+event][+observation][+vigil][+care_taking]

Examples:
The shepherds kept watch over their flocks by night.
Who is keeping a watch over the baby while Mary is out?

Mappings:
PropBank: watch.01
WordNet 3.0 Sense Numbers: 6

Sense Number 5: someone doing lookout or surveillance

Commentary: WATCH[+entity][+person][+lookout]

Examples:
He worked as a watch for the mob, tracking events from his front room window.
The soldiers sent a boy to be the watch, having him climb a tree and hide among the branches.
John worked the midnight shift as a watch on the factory grounds.

Mappings:
PropBank: NM
WordNet 3.0 Sense Numbers: 5

Sense Number 6: crew or officers of a ship on a duty period

Commentary: WATCH[+group][+people][+military][+on_duty][+for_period][+fixed]

Examples:
The sailor was a member of the starboard watch on the battleship.
The first watch reported sighting enemy ships directly north of the vessel.

Mappings:
PropBank: NM
WordNet 0.0 Sense Numbers: 2c