The term 'Gray Lines' refers to a type of poetic form. An ELEGY is a POEM that expresses sorrow or lamentation, usually for someone who has died. A POEM is a piece of writing that expresses ideas, feelings, or tells a story in a specific form. An ODE is a lyrical POEM that expresses strong emotion, usually praising or glorifying a person, place, or thing. POESY is another word for poetry. Therefore, Gray Lines is a poetic form that combines elements of ELEGY, POEM, ODE, and POESY.