A haircut is when someone cuts your hair to make it look nice and tidy. It's like giving your hair a fresh new style.
When people go for a haircut, they usually sit down in a barber's chair or at a stylist's salon. The person doing their hair will ask them what kind of cut they want - short and neat, long and messy, or something in between. They might also talk about the style of the haircut, like a fade or layers. After that, the stylist gets to work with scissors and clippers to make it happen. Sometimes people go for a trim just to tidy up their hair without changing the style much.
The act of cutting of the hair, often done professionally by a barber, hair stylist, or beautician.
