What is the example of obstacles?

The definition of an obstacle is something that gets in the way or that slows or stops progress. An example of an obstacle is not having the tuition money to go to college. An example of an obstacle is when a road block is set up in your way that prevents you from passing by.

What could be obstacles?

An obstacle is something, material or nonmaterial, that stands in the way of literal or figurative progress: Lack of imagination is an obstacle to one's advancement. ... A hindrance keeps back by interfering and delaying: Interruptions are a hindrance to one's work.