The phrase "penis bone" refers to a bone that some animals have in their reproductive organs to help with mating. It is not present in humans. Full definition
This Hebrew scholar goes on to say that the word refers to the missing penis bone. (redeeminggod.com)
Polar bear penis bones are shrinking in Eastern Greenland, according to Christian Sonne of the University of Aarhus in Denmark and colleagues. (climatechangepredictions.org)
In 2004, Steven Fergusson of the University of Manitoba in Canada showed that carnivores living in snowy environments, close to the poles, tend to have longer penis bones to help them be more competitive. (climatechangepredictions.org)