I. -ˌhed noun
Date: 1908
: a stupid person : numskull
• bone·head·ed -ˈhe-dəd adjective
• bone·head·ed·ness noun
II. adjective
Date: 1911
1. : of, relating to, or characteristic of a bonehead : performed in a stupid or clumsy manner
the shortstop made a bonehead play
2. : being a college course for students lacking fundamental skills
teaches bonehead English