noun

hurdle

HUR-duhl/ˈhɜːrdl/

An obstacle or difficulty that must be overcome.

The fallen trunk presents a hurdle for the walker.

An older woman on a walking trail carefully climbs over a fallen tree trunk blocking the only clear route forward, making the obstacle and the effort to overcome it immediately visible.
Etymology

A twig barrier became a race barrier to jump, then any obstacle that must be overcome.

More examples

  • Funding is the project's biggest hurdle.
  • They clear the final legal hurdle.

Forms

hurdle

Similar words

obstacle
Anything blocking progress.
difficulty
A problem that need not be conceived as a barrier.