Twain is an English gender-neutral name that carries the meaning of "Two Items Of The Same Kind." Its origin stems from the concept of duality and similarity. In addition to its literal meaning, Twain is also associated with the number 2 in dated or literary usage. Notable individuals bearing this name include the renowned American writer Samuel Langhorne Clemens, who adopted the pseudonym Mark Twain, as well as the accomplished Canadian singer-songwriter Shania Twain. Furthermore, Twain has been attributed to geographic locations such as Twain, California, and the Douglas River, formerly known as Twain, in New Zealand. The name also holds significance in the realm of technology, being linked to TWAIN, a communication standard for digital imaging devices.