ACROSTIC

An acrostic poem is a cryptographic form in which the initial letter of each line spells out a word, often the subject of the poem or the name of the person to whom the poem is dedicated.

A series of lines in which certain letters usually the first in each line and it is form a name or message when read in sequence.

Example:

Acrostic
Are playful
Contrivances of prose or verse
Rendered so that each line
Opens or closes with words in
Sequence to read from
Top to bottom, their
Initial or final letters
Constituting a word or phrase.

Constituting a word or phrase.