Definition of nail-headed in English:

nail-headed

adjective

  • 1Of a character in a writing system or a stroke in painting: having the shape of a nail head. Compare "nail head". Now rare.

  • 2Generally. Formed like a nail head; having a head like that of a nail.

  • 3Slang. Stupid; stubborn. rare.

Origin

Early 19th century. From nail + headed, after nail head.

Pronunciation

nail-headed

/ˈneɪlˌhɛdɪd/