a·head (?-h?d?)adv.1. At or to the front or head.2. a. In advance; before: Pay ahead, and you’ll receive a discount.b. In or into the future; for the future: planned ahead.3. a. In an advanced position or a configuration registering the future: Set the clock ahead.b. At or to a different time; earlier or later: moved the appointment ahead, from Tuesday to Monday.4. a. In a forward direction; onward: The train moved ahead slowly.b. In the prescribed direction or sequence for normal use: You won’t hear anything unless you roll the tape ahead.5. In or into a more advantageous position: wanted to get ahead in life.Idiom: be ahead To be winning or in a superior position: The home team was ahead in the second period. Your company is ahead in developing the new technology.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.ahead (??h?d) adj (postpositive) in front; in advanceadv1. at or in the front; in advance; before2. onwards; forwards: go straight ahead. 3. in front of; at a further advanced position than4. before; at an earlier time than5. (Commerce) stock exchange in anticipation of: the share price rose ahead of the annual figures. 6. (Banking & Finance) stock exchange in anticipation of: the share price rose ahead of the annual figures. 7. be ahead informal to have an advantage; be winning: to be ahead on points. 8. get ahead to advance or attain successCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014a?head (??h?d) adv. 1. in or to the front; before. 2. in a forward direction; onward. 3. into or for the future: Plan ahead. 4. so as to register a later time: to set the clock ahead. 5. at or to a different time, either earlier or later. 6. onward toward success: to get ahead in the world. adj. 7. having the highest score so far, as in a competition; presently winning. Idioms: ahead of, before or further than. [1590?1600] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.