Noah Webster's New International Dictionary of the English Language
1. (v.) To a greater distance; in addition; moreover; farther.
2. (superl.) More remote; at a greater distance; more in advance; farther; as, the further end of the field. See Farther.
3. (superl.) Beyond; additional; as, a further reason for this opinion; nothing further to suggest.
4. (adv.) To help forward; to promote; to advance; to forward; to help or assist.