from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Informal Brewed coffee.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A male; a guy; a fellow.
- n. Coffee.
from the GNU version of the Collaborative International Dictionary of English
- n. See johannes.
from The Century Dictionary and Cyclopedia
- n. A fourpenny-piece. Also joey.
- n. [capitalized] An old jest: same as Joe Miller.
- n. A lobster too small to be sold legally—that is, one under ten inches in length.
- n. A Portuguese and Brazilian gold coin, worth from eight to nine dollars.
- n. A master; a superior.
- n. A sweetheart; a darling.
Short for (old black) joe, military slang for coffee, from the title of a song by Stephen Foster.(American Heritage® Dictionary of the English Language, Fourth Edition)
From the proper name Joe (Wiktionary)
A proposed etymology is as follows: Josephus Daniels (1862-1948) was appointed Secretary of the U.S. Navy by President Woodrow Wilson in 1913. Among his numerous reforms of the Navy was the abolition of the officers' wine mess. From that time on, the strongest drink aboard navy ships was coffee and over the years, a cup of coffee became known as "a cup of Joe". However, further investigation by others at snopes.com showed that the name appeared before the general order by the Navy to ban the wine mess. (Wiktionary)