pl. -·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”)