what does auricular appendage mean?

AURICULAR APPENDAGE as NOUN

Meaning
- a pouch projecting from the top front of each atrium of the heart
Synonym(s)
- auricula (what does auricula mean?)
- auricular appendix (what does auricular appendix mean?)
Hypernyms(s) auricular appendage is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
- pouch (what does pouch mean?)
- pocket (what does pocket mean?)