A gulp is a sudden intake of breath or air, often when we're feeling nervous or surprised.
When someone says "gulp", they usually mean that they've swallowed hard, often because something has caught their attention. It might be something scary, exciting, or even embarrassing! Imagine you're watching a horror movie and the monster jumps out - you'd probably gulp in shock. Or maybe you're about to give a big presentation at work and your stomach starts to churn with nervousness - again, a gulp is likely. The word can also refer to drinking something quickly, like gulping down a glass of water on a hot day.
The usual amount swallowed.
