"The Raven" has several instances of onomatopoeia, including the words "tinkled," "shrieked" and "flitting." While some believe that the raven's call of "Nevermore!" in the poem was supposed to be an onomatopoeia, it does not actually resemble a real raven's call.
Rosa's whole childhood was influenced by segregation of everything; restrooms, drinking fountains, education and transportation. She was also sick most of the time.