Catwalk:

Catwalk is a narrow, elevated route or ledge on a map that players use to move between areas while staying above the main ground level. In Counter-Strike 2, catwalks are important for map control because they often provide alternate angles, quicker rotations, and access to off-angle fights.

The term is also used as a callout on certain maps, where teammates may refer to a specific walkway or high path as “catwalk” during communication.

Related: Callout, Mid