Part of Speech: Adjective

Definition: Relating to of characterized by Melody; Plesant-sounding.

Source: Oxford Dictionary

Found in the Last line of ” I hear America Singing ” by Walt Whitman

This word was useful to look up because in the poem since there is a lot of singing, the word “melodious”  makes it sound like the singing sounds great. Especially putting this word at the end of the poem could also mean the singing throughout the poem was Melodious.