noun🔗ShareAstasA branching and bony structure on the head of deer, moose and elk, normally in pairs. They are grown and shed each year. (Compare with horn, which is generally not shed.)"While hiking in the woods, I found an antler from a deer."Mientras caminaba por el bosque, encontré un asta de ciervo.animalbiologynaturebodyanatomyChat with AIVocabulary GamePractice Reading