An obstacle is something that gets in the way or blocks your progress towards a goal. You might think of it as a challenge or problem.
When people talk about obstacles, they often mention things like traffic jams on the road to work, or long lines at the store. But an obstacle can be anything that's stopping you from doing what you want to do - even something intangible like fear or self-doubt. Imagine you're trying to learn a new language and your mind keeps wandering to other thoughts when you try to focus on grammar rules. That's an internal obstacle! Others might struggle with external obstacles, like not having the right tools for a project at work. Whatever it is, an obstacle is something that needs to be overcome or worked around if you want to achieve your goal.
Something that impedes, stands in the way of, or holds up progress
Example: A big obstacle to understanding the manual was that it had been poorly translated from the Japanese.
