Police code word that follows Juliet (4)

I believe the answer is:

kilo

(Other definitions for kilo that I've seen before include "Metric prefix meaning 1,000" , "Prefix for thousand" , "Metric unit of weight" , "Approx 2 point 205 lbs" , "Unit of weight (abbr)" .)

I've seen this clue in The Sun.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.