Definition of baculum in English:


nounPlural bacula

  • another term for os penis
    • ‘The following morphological measures were obtained from each otter: body length, total length (nose to tip of tail), baculum length, testicle width (in millimeters), and body weight (in kilograms).’
    • ‘Like some other mammal taxa, but unlike rabbits and other lagomorphs, male rodents have a baculum (penis bone).’
    • ‘The males have a well-developed baculum with a total length of around 72 mm.’
    • ‘Male viverrids have a baculum.’
    • ‘Many male mammals have a baculum or penis bone that aids in reproduction.’


1930s: modern Latin.