Resembling a blockhead; stupid

simple past tense and past participle of blockhead

present participle of blockhead

plural of blockheadism

The character or behaviour of a blockhead; stupidity.

(colloquial) A stupid person. / A sideshow performer who hammers nails or similar items through his or her nostril into the nasal cavity; human blockhead.

To perform as a human blockhead. / (rare) To behave in a stupid manner.

plural of blockhead

Third-person singular simple present indicative form of blockhead

A performer who drives a nail or other implement into his/her nasal cavity, producing the illusion that it is being driven into a solid part of the head.