acrostic
/əˈkrɒstɪk/noun
- a poem, word puzzle, or other composition in which certain letters in each line form a word or words离合诗。
词源
late 16th cent.: from French acrostiche, from Greek akrostikhis, from akron 'end' + stikhos 'row， line of verse'. The change in the ending was due to association with -IC.