Definition:
"Fossa fossa" is a scientific name for a specific animal known simply as the fossa. It is a carnivorous mammal that is native to Madagascar. The fossa looks somewhat like a small cougar, with a long body and a long tail, and it is the largest predator on the island.
In scientific or academic contexts, you might come across "Fossa fossa" when discussing biodiversity, conservation, or the unique wildlife of Madagascar.
The word "fossa" can also refer to a depression or hollow in anatomy, such as a fossa in the skull or other bones. However, in this context, we are focusing on the animal.
There are no specific idioms or phrasal verbs associated with "fossa fossa," as it is a scientific term.
In summary, "fossa fossa" refers to a unique mammal from Madagascar known for being a top predator in its environment.