A bicycle pump is a device used to inflate the tires of a bicycle. It works by forcing air into the tire through a valve, which helps maintain the correct pressure for safe and efficient riding. There are different types of bicycle pumps, including hand pumps, floor pumps, and electric pumps, each designed for specific uses and convenience. Most bicycle pumps are equipped with a nozzle that fits various valve types, such as Schrader and Presta valves. Regularly checking and inflating tires with a pump can enhance performance, improve safety, and extend the life of the tires.