Dictionary.net

(American football) the act of obstructing someone's path with your body; "he threw a rolling block into the line backer"

The act of obstructing, supporting, shaping, or stamping with a block or blocks.

The act of obstructing, supporting, shaping, or stamping with a block or blocks.

of Block

1. The arrest of passage through, obstructing. 2. In psychoanalysis, a sudden break in the association occurring when a complex is touched.