Noun

(wikipedia superintendent) (en noun)

A person who is authorized to supervise, direct or administer something.

A police rank used in Commonwealth countries, ranking above chief inspector, and below chief superintendent.

*{{quote-book, year=1928, author=Lawrence R. Bourne

, title=Well Tackled! , chapter=7 citation , passage=“No, don't,” replied the superintendent ; “in fact, I'd rather you made yourself conspicuous elsewhere. Go down to the landing stage and cross to New Brighton or Wallasey—doesn't matter which—and come back. No doubt you will be seen, and reported to have gone across.”}}

The manager of a building, usually a communal residence, who is responsible for keeping the facilities functional and often collecting rent or similar payments, either as also the building's landlord or on behalf of same. Often abbreviated "super".

(chiefly, US) A janitor.

Noun

(en noun)

Close observation of an individual or group; person or persons under suspicion.

Continuous monitoring of disease occurrence for example.

(military, espionage) Systematic observation of places and people by visual, aural, electronic, photographic or other means.

* {{quote-magazine, date=2012-12-14

, author=Simon Jenkins, authorlink=Simon Jenkins , title=We mustn't overreact to North Korea boys' toys , volume=188, issue=2, page=23 , date=2012-12-21 , magazine= citation , passage=The threat of terrorism to the British lies in the overreaction to it of British governments. Each one in turn clicks up the ratchet of surveillance , intrusion and security. Each one diminishes liberty.}}

(legal) In criminal law, an investigation process by which police gather evidence about crimes, or suspected crime, through continued observation of persons or places.