means A macaw is any of several large, long-tailed, brilliantly colored parrots native to the tropical Americas, known for their loud calls and long lifespans.

from The word arrived in English in the 1600s through Portuguese 'macau' or 'macao,' borrowed in turn from a Tupi or other indigenous Brazilian language — likely from a native name for the bird or for a palm tree whose fruit the macaws fed on. The trail back to the exact source word goes a bit hazy in the Amazon, as colonial transcriptions of native names often did, but the New World roots are solid.