Where The Sidewalk Ends is a 1974 children's poetry book written by Shel Silverstein. It is a collection of poems that explore a wide range of topics, from the fantastical to the everyday. The title of the book comes from the poem 'Where the Sidewalk Ends, ' which speaks of a place where the sidewalk ends and the world of imagination begins. The crossword solution for this term is 'CURB, ' which refers to the edge of the sidewalk.