watchman's detector
watchman's detector · watchman's detectors
An apparatus for recording the time when a watchman visits a station on his roundsAn apparatus for recording the time when a watchman visits a station on his rounds.
Meaning
1 senses(historical)An apparatus for recording the time when a watchman visits a station on his rounds.
Forms
plural: watchman's detectors| Singular | watchman's detector |
|---|---|
| Plural | watchman's detectors |
regular