leaves of grass

noun

1. a book of poems (first edition, 1855; final edition, 1891–92) by Walt Whitman.

(1855) A collection of poems by Walt Whitman, written mainly in free verse. Published with revisions every few years until Whitman’s death in 1892, it contains such well-known poems as “I Hear America Singing,” “Song of Myself,” and “O Captain, My Captain.”