nounpl. -·la or -·lums
a slim bone that supports rigidity of the penis in many mammals, including rodents, carnivores, and primates
Origin of baculumL, a stick: see bacillus
nounpl. bac·u·la, or bac·u·lums
The bone of the penis of many mammals, including most rodents, carnivores, and nonhuman primates. Also called os penis .
Origin of baculumNew Latin from Latin rod, stick ; see bak- in Indo-European roots.
From Latin baculum (“stick, staff, sceptre, cudgel”)