Definitions
1.NounOne entrusted with a (small) commission, such as an errand; especially, an attendant or subordinate employee in a public office, hotel, etc.
2.NounA uniformed doorman.
3.NounAn undisclosed agent under European civil law.
4.Noun↑ Jespersen, Otto (1909), A Modern English Grammar on Historical Principles (Sammlung germanischer Elementar- und Handbücher; 9), volume I: Sounds and Spellings, London: George Allen & Unwin, published 1961, § 12.22, page 342.