What is the meaning of thickheaded?

adjective

7
 
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APAWordNet. (2010). thickheaded. Retrieved April 22, 2018, from http://smartdefine.org/thickheaded/definitions/1185296
ChicagoWordNet. 2010. "thickheaded" http://smartdefine.org/thickheaded/definitions/1185296 (accessed April 22, 2018).
HarvardWordNet 2010, thickheaded, Smart Define, viewed 22 April, 2018, <http://smartdefine.org/thickheaded/definitions/1185296>.
MLAWordNet. "thickheaded" 23 October 2010. Web. 22 April 2018. <http://smartdefine.org/thickheaded/definitions/1185296>