the stage or period of greatest vigor, strength, success, etc.; prime: the heyday of the vaudeville stars. 2. Archaic. high spirits. Origin of heyday1.
A USB flash drive, also variously known as a USB drive, USB stick, thumb drive, pen drive, jump drive, flash-drive or USB memory, is a data storage device that includes flash memory with an integrated USB interface. USB flash drives are typically removable and rewritable, and physically much smaller than an optical disc.
Jump drive. 1. Alternatively referred to as a USB flash drive, data stick, pen drive, memory unit, key chain drive and thumb drive, a jump drive is a portable storage device. It is often the size of a human thumb (hence the name) and it connects to a computer via a USB port.