policeman

Etymology

police + -man

noun

1. A male police officer, sometimes used for any police officer regardless of gender.
   The policeman who arrests the "Red" does not understand the theories the "Red" is preaching; if he did, his own position as bodyguard of the monied class might seem less pleasant to him. 1941, George Orwell, The Lion and the Unicorn, Pt. I
   Meanwhile Nanny Broome was recovering from her initial panic and seemed anxious to make up for any kudos she might have lost, by exerting her personality to the utmost. She took the policeman's helmet and placed it on a chair, and unfolded his tunic to shake it and fold it up again for him. 1963, Margery Allingham, chapter 19, in The China Governess
2. (chemistry) A glass rod capped at one end with rubber, used in a chemistry laboratory for gravimetric analysis.
3. (entomology) Any skipper of the genus Coeliades.
4. (ice hockey) Synonym of enforcer
   A team may have a policeman or enforcer. 2002, P. J. Harari, Dave Ominsky, Ice Hockey Made Simple: A Spectator's Guide, page 26