klick
/klɪk
/(also klik)
noun informal
A kilometre.James provided Roger with cover, excluding all enemy fighters within three klicks....
- When he was one klick away, a message came through.
- By the odometer it's about 1.5 kilometres, or half a klick shorter than the other route, which ends up in the same place, but approaches it from the north.
Origin
1960s: of unknown origin; the term was originally used in the Vietnam War.