Commissionaire /(?)/

Com·mis·sion·aire

Commissionaire

n.
  1. One intrusted with a commission, now only a small commission, as an errand; esp., an attendant or subordinate employee in a public office, hotel, or the like.
  2. One of a corps of pensioned soldiers, as in London, employed as doorkeepers, messengers, etc.
  3. a uniformed doorman. [British]