Definition & Meaning of "blocked"in English

What does "blocked" mean in Irish slang?

The structure is a simple adjective borrowed from the literal meaning of being obstructed or blocked up, repurposed to describe a state of intoxication. It is used in Irish English (Hiberno-English) to mean drunk or intoxicated, often heavily so. People typically say "He's completely blocked" or "We got blocked at the pub last night." The term originated in 20th century Irish slang, and remains common in casual speech.