the GNU version of the Collaborative International Dictionary of English
n. The sex organs, especially the external sex organs, called the external genitalia; the genitals.
The Century Dictionary and Cyclopedia
In zoology, the generative organs; the genitals.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. external sex organ
Word Usage
"Hmm. Perhaps the original prints were made to suggest that mariners had sexual congress with denizens of the deep (hence the tail bifurcation) but genitalia is significantly not there in either picture."