good old boy also good ol’ boy or good ole boy (?l)n. Slang A man having qualities held to be characteristic of certain Southern white males, such as a relaxed or informal manner, strong loyalty to family and friends, and often an anti-intellectual bias and intolerant point of view.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.good ol’ boy n a. a man considered as being trustworthy and dependable because of his ordinary and down-to-earth background and upbringing b. (as modifier): he was expected to bring some good-ol’-boy informality to the White House. Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014