Definition of boner in English:

boner

Pronunciation /ˈbōnər/ /ˈboʊnər/

Translate boner into Spanish

noun

North American
  • 1vulgar slang An erection of the penis.

  • 2informal A stupid mistake.

    • ‘unfortunately somebody pulled a major boner on this one’
    • ‘The Consumerist will highlight the persistent, shameless boners of modern consumerism - and the latest hot deals, discounts, and freebies around.’
    • ‘The Times corrections culture seems to revel in correcting every misspelling, transposed digit, historical inaccuracy, and boner.’
    • ‘They were there to trap me into some kind of boner.’
    • ‘There are also a couple of bad physics boners on their website - for instance, the claim that certain celestial radiation sources are made of ‘dark matter’.’
    • ‘For both these reasons I should not have felt too much chagrin if it were pointed out that I had made a boner in the course of my mathematical and logical discussion.’
    • ‘I realize that I made a "boner" of a mistake, but why punish me by taking money out of my wallet?’
    mistake, error, blunder, fault, gaffe, slip, slip of the pen

Origin

Mid 19th century (originally school slang, in the now obsolete sense ‘a blow to a bony part of the body’): from bone or (in boner (sense 2)) bonehead, + -er.