What is "dunderheads"

Usage examples of "dunderheads".

Provided, of course, that it is not done as a merely academic endeavor, where a bunch of disengaged dunderheads attempt to analyze the signifiers without having a clue as to the actual referents.

Benjamin Bathurst, who, until now, was well-behaved and seemed to take his confinement philosophically, should suddenly make this rash and fatal attempt, unless it was because of those infernal dunderheads of madhouse doctors who have been bothering him.