A person employed by a privately owned establishment, such as a hotel or large retail store, with the job of preventing wrongdoing and apprehending violators of laws or other regulations.

Having failed to be detected; not detected

(idiomatic) investigative research

(Canada, US, derogatory) A forestry official charged with measuring waste in logging operations.

A specialized form of police dog; trained to use its sense of smell to detect and locate evidence of illicit substances, from illegal drugs to explosives materials, which may be carried on a person in their effects.

(informal) The use of polygraphs during interrogation in an attempt to verify the truth or falsity of a subject's responses / (broadly) The use of any technique intended to detect deception.

plural of detective gag

A gag fashioned from a piece of cloth pulled over one’s mouth and tied at the back of one’s head.

A very fine-toothed comb used to check a person's hair for nits or lice.

plural of detection comb