1. Verse in which certain letters such as the first in each line form a word or message
   "The children wrote an acrostic poem using the letters of their school's name"
    
2. A puzzle where you fill a square grid with words reading the same down as across
   "The ancient acrostic discovered in Pompeii fascinated linguists";
   - word square

Derived forms: acrostics

Type of: literary composition, literary work, mystifier, puzzle, puzzler, riddler, teaser

Encyclopedia: Acrostic