Slang Used as an intensive: had a heck of a lot of money; was crowded as heck. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "heck" in a sentence
"You have to ask questions and verify just what in heck is being asked of your that's so important it needs your signature."
"What the heck is a mature woman, who wants to remain fashionable, supposed to do?"
"MexConnect. com Forums: Specific Focus: Mexican Kitchen: What the heck is a Timbiriche???"