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baculum

British  
/ ˈbækjʊləm /

noun

  1. a bony support in the penis of certain mammals, esp the carnivores

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of baculum

C20: New Latin, from Latin: stick, staff

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Although the baculum has been extensively examined by researchers over the years, there are still many unanswered questions.

From The Guardian • Jan. 24, 2018

“The penis bone does not directly attach to the pelvis, so when the animal begins to decay, the baculum quickly becomes separated from the rest of the body.”

From The Guardian • Jan. 24, 2018

The results show that the baculum first evolved 145–95 million years ago, in the common ancestor of primates and carnivores.

From Nature • Dec. 20, 2016

It might therefore be expected that baculum size correlates with testis size.

From Economist • Dec. 13, 2016

Voles of the genus Microtus vary in the structure of the baculum almost as much as do the lemmings.

From The Baculum in Microtine Rodents by Anderson, Sydney