Hurdle/ˈhɜːrdl/ Definition 1 of 4Pro Tip 1/2Metaphoric Use Used to describe abstract challenges, not just physical barriers. The biggest hurdle in learning a new language is often confidence. Pro Tip 2/2Not Always Negative 'Hurdle' implies the challenge can be overcome with effort or skill. Securing a loan was a hurdle they could handle with some financial advice.