triple acrostic

Noun

 * 1) A poem whose stanzas, except the first three, are clues for words. The initial letters of these words, in order, form a word clued by the first stanza; the middle letters, the second stanza; and the final letters, the third stanza.

Meronyms

 * cross-light, light
 * upright

Coordinate terms

 * double acrostic