An exclamation of frustration or surprise, "heck" is like saying "good grief" or "goodness gracious."
When people use the word "heck," it's often when they're expressing their emotions in a moment. For example, if someone is stuck in traffic and frustrated, they might say, "This traffic is heck!" It's not meant to be taken literally, but rather as an exclamation of annoyance or frustration. The word can also be used in a more playful way, like when a kid is disappointed by losing a game: "I lost at Monopoly, heck! I thought I was going to win!" In this case, it's just a lighthearted way of expressing a sense of surprise and disappointment.
(euphemistic) Hell.
Example: Heck, what did I expect? It's too muddy out to go biking today.
