The Collaborative International Dictionary of English v.0.48:

Further \Fur"ther"\, v. t. [imp. & p. p. Furthered; p. pr. &
   vb. n. Furthering.] [OE. furthren, forthren, AS.
   fyr[eth]ran, fyr[eth]rian. See Further, adv.]
   To help forward; to promote; to advance; to forward; to help
   or assist.
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         This binds thee, then, to further my design. --Dryden.
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         I should nothing further the weal public. --Robynsom
                                                  (More's
                                                  Utopia).
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