heroic couplet definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a rhyming pair of iambic-pentameter lines, first used extensively in English by Chaucer and later developed as a syntactically complete unit, esp. by Dryden and Pope (Ex.: “In every work regard the writer's end, Since none can compass more than they intend”)
heroic couplet definition by American Heritage Dictionary
A verse unit consisting of two rhymed lines in iambic pentameter.