A telestich is a poem or passage in which the last letters of successive lines spell out a word, name, or phrase. It is the reverse of an acrostic, which uses the first letters of each line. Poets use telestichs as a hidden pattern for emphasis, playfulness, or surprise.
Example
Silver rain brushes the window framE
Old roofs shine under the evening glOw
Only the dark keeps listening belOw
Night settles softly with the stars in tOw