pneumostome
Noun
Meaning
English Wikipedia has an article on:pneumostomeWikipedia
pneumostome (plural pneumostomes)
A pore through which slugs and other gastropods breathe
Examples
An externally located opening called the pneumostome allows air to be taken into the mantle cavity lung.
Slugs appear externally symmetrical, but their pneumostome (breathing hole) is located on the right side.