Definition of blocked-up:
(adj) :
Obstructed, so that through movement or flow is prevented or impeded.
(adj) :
Unable to move owing to an obstruction.
(adj) :
(of a person, telephone number, IP address, etc.) Banned or barred from connecting or logging on.
(adj) :
(of a computer account or similar) Disabled or disconnected, so as to prevent access or from performing certain actions.
(adj) :
(Ireland, slang) Drunk.
(adj) :
(crosswording) With black squares separating the lights and marking the ends of words.