calling a cop a police officer is more polite; but when other cops do it it's a like a calling a garbage-man a sanitation-worker or a calling a store-clerk a sales-associate
1) slightly-fancier term     for policeman
"calling a cop a police officer is more polite; but when other cops do it it's a like a calling a garbage-man a sanitation-worker or a calling a store-clerk a sales-associate" What is the definition of "police officer"?