Noun: The last uphill before you reach your destination.
Most commonly used by those completing a run, walk,
bike ride, or other
physical activity.
So named, because it makes you
grumble.
"We're almost home! We just have to make it over
the grumble and we're there!"
"Oh fuck, I
totally forgot this hill
was here. I fucking hate the grumble."
"I was doing really well, and then I hit the grumble and I just had to stop and walk it."