The scalp is the skin that covers the top and back of your head, where your hair grows. When you wash your hair, you're cleaning your scalp. Doctors and dermatologists sometimes examine the scalp to check for health problems like dandruff.

The word has a very different meaning as a verb. To scalp tickets means to resell them at much higher prices, often outside concerts or sporting events. This practice can be illegal in some places. In trading, scalping means making many quick trades to try to profit from small price changes.