What does anagram mean?
The definition of anagram
An”a*gram, n.
Etym: [F. anagramme, LL. anagramma, fr. Gr. Graphic.]

Literally, the letters of a word read backwards, but in its usual wider sense, the change or one word or phrase into another by the transposition of its letters. Thus Galenus becomes angelus; William Noy (attorney-general to Charles I., and a laborious man) may be turned into I moyl in law.

An”a*gram, v. t.
To anagrammatize. Some of these anagramed his name, Benlowes, into Benevolus. Warburton.