What is the meaning of Blocking?

present participle and gerund of block

The act by which something is blocked; an obstruction.

The precise movement and positioning of actors in order to facilitate a performance (originally planned using miniature blocks).

Blocks used to support (a building, etc.) temporarily.

A feature that prevents a keyboard from registering multiple simultaneous keypresses that would cause ghosting.

A rectangular discontinuity as an artifact of separating a discrete signal into blocks that are processed individually.

Source: wiktionary.org