acros·tic /əˈkrɔstɪk, ˈkrɑs-/
 離合詩(a.)離合詩的


 A·cros·tic n.
 1. A composition, usually in verse, in which the first or the last letters of the lines, or certain other letters, taken in order, form a name, word, phrase, or motto.
 2. A Hebrew poem in which the lines or stanzas begin with the letters of the alphabet in regular order (as Psalm cxix.). See Abecedarian.
 Double acrostic, a species of enigma, in which words are to be guessed whose initial and final letters form other words.

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 A·cros·tic A·cros·tic·al n. Pertaining to, or characterized by, acrostics.

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 acrostic
      n 1: a puzzle where you fill a square grid with words reading the
           same down as across [syn: word square]
      2: verse in which certain letters such as the first in each
         line form a word or message