Definition of baculum in English:

baculum

Syllabification: bac·u·lum
Pronunciation: /ˈbakyo͝oləm
 
/

noun (plural bacula /-lə/)

another term for os penis.
More example sentences
  • 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.

Origin

1930s: modern Latin.

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