1. Medical: a drug used as a heavy sedative.

2. 'A thinking man's mogadon', something that would put a man of intelligence to sleep.
by robh353 June 20, 2005
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A person, usually of some significance/importance, who speaks in a very slow, boring and monotonous manner thus rendering his/her audience bored to tears.
Mark Drakeford is Captain Mogadon; He is boring, grey, dull and monotonous!
by Credible Threat May 8, 2021
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