'Thick-skulled' definitions:

Definition of 'thick-skulled'

(from WordNet)
adjective
(used informally) stupid [syn: blockheaded, boneheaded, duncical, duncish, fatheaded, loggerheaded, thick, thickheaded, thick-skulled, wooden-headed]

Definition of 'Thick-skulled'

From: GCIDE
  • Thick-skulled \Thick"-skulled`\, a. Having a thick skull; hence, dull; heavy; stupid; slow to learn. [1913 Webster]