What is the name of poem that has sideways words?

There isn't a single specific poem with a name that refers to "sideways words," but there are a few poetic forms that feature unusual word arrangements:

* Concrete Poetry: This form focuses on visual elements, often using words and letters arranged to create shapes or images. This can sometimes appear as "sideways words" as part of the visual design.

* Visual Poetry: This is a broad category that encompasses any poetry that uses visual elements to enhance meaning. Some visual poems might feature sideways words, rotated words, or other non-traditional arrangements.

The specific form would depend on the exact arrangement of the "sideways words" and the overall context of the poem. If you have a specific example in mind, it would be helpful to provide more information about the poem or its arrangement.