1. Moving or carrying outward or away from a central part. Refers to vessels, nerves, etc. For example: blood vessels carrying blood away from the heart or nerves carrying signals from the brain. (biology-online.org)
2. A duct or stream that carries away. (wiktionary.org)
3. An efferent part (as a blood vessel or nerve fiber). (merriam-webster.com)
4. A nerve that conveys impulses toward or to muscles or glands. (wordnetweb.princeton.edu)
Word origin: 1827, from Latin efferentem (nominative efferens), present participle of effere “to carry out or away, bring forth,” from ef– (see ex-) + ferre “to bear, carry” (see infer).