Edgar Alan Poe's "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.
Onomatopoeia is an often used literary device in which an author uses a word that sounds like the sound it represents. While an onomatopoeia describes a sound, they are most often found in literature as verbs. For example, the sounds lightning makes when it goes across the sky can be described as a "crack," but in a sentence it would be used as a verb: "The lightning cracked across the sky."