Final answer:
Dreamtime is the term that specifically refers to the Australian Aboriginal cosmology, encompassing the Aboriginal spiritual belief system, creation stories, and cultural identity.
Step-by-step explanation:
The specific term that refers to the Australian aboriginal cosmology is Dreamtime. Dreamtime is a foundational aspect of Aboriginal culture and spirituality that interconnects the past, the present, and the essence of existence through stories and rituals. It represents the time when ancestral spirits progressed over the land and created life and the physical geographic features of Australia. Aboriginal art, songlines, and oral traditions are deeply embedded with the Dreamtime, and through these cultural expressions, the sacred stories of creation and existence are passed down through generations and are continually relived.
Totemism, another culturally significant concept, involves a spiritual association and kinship with a plant or animal, often representing a group or clan. This system of belief functions as a metaphorical bridge between humans and the natural world, with totems serving as emblems of cultural identity or spirituality.
The didgeridoo and the boomerang are traditional instruments and tools associated with Aboriginal culture, but they do not specifically refer to the cosmology of the Aboriginal peoples of Australia.