Transitive verb: ‘to obstruct or block with or as if with a roadblock’. Recognised in major dictionaries.
Definitions
To obstruct or hinder by placing or acting as a roadblock. Protesters tried to roadblock the convoy at the city limits.
Attributive use: e.g. ‘roadblock crews, roadblock tactics’. Treated as adjective per policy.
Definitions
Designed for, relating to, or functioning as a roadblock; intended to stop or impede movement. The police set up a roadblock checkpoint and deployed additional roadblock barriers.