MEANING: noun: A composition in which the first letter of each line spells out a word or message.

ETYMOLOGY: From Latin acrostichis, from Greek akrostikhis, from akron (head) + stikhos (line). Earliest documented use: 1585. A word with the same root is acrophobia.

NOTES: When the spelled-out word is in the middle (instead of from the initial letters), it’s called a mesostic (example). Also see, a meta acrostic.

AEROSTIC - used by pilots to make the plane go up, down, or sideways

ACROUTIC - soup from which all the buttons have been removed

LACROSTIC - (I don't think I even need to finish this!)