What is below is the entry from dictionary.com
heck1 /hɛk/ [hek]
–interjection
1. (used as a mild expression of annoyance, rejection, disgust, etc.): What the heck do you care?
–noun
2. something remarkable of its kind (usually used in the phrase heck of a ): That was a heck of an impressive speech. Have one heck of a good time.
—Idiom
3. as heck (used as a mild intensifier): I say he's guilty as heck.
Use heck in a Sentence