five-o
nounEtymology From the police procedural television series Hawaii Five-O (first aired in 1968), so named because it is set in Hawaii, which is the 50th U.S. state.
1
The police.
US street slang
- Five-oh caught me, now I'm going to the mountains / Said good-bye to my girl, my lawyer and accountants1989, “Car Thief”, in Paul's Boutique, performed by Beastie Boys: