Their name is derived from the original code they lived by, K'khinsier Tor Abbi. Because the original name is a bit of a mouthful, it has naturally evolved overtime, shifting through K'khinsierabi, K'hiserabi, and finally its modern form, Hiserabi In High Tone the name means "Creators of their own fate"; in Flat Tone it means "Those who gamble with their lives"; and in Low Tone it means "Those who take lives and belongings". The definitions of these tonal variations are provably true only within modern context; it's difficult to track the exact etymology throughout history as the Hiserabi are not a people noted for their tendency to keep a reliable historical record. ⠀
The Hiserabi were meant to counterbalance the natural issue that Ral-Mi provided. That is, where Ral-Mi were strong and nimble they were also large and slow to mature. Ral-Mi provided a great workforce but weren't quick to produce, even with the aid of Metaphysics. By contrast, Hiserabi were lightweight and small, perfect for maintaining the highest reaches of the grand forest and carve the details of buildings most Verin weren't capable of. Much of the inspiration for their skeletal structure came from primates, explaining their elongated arms. The development of their poison craw was an unexpected result, though the Verin did not recognize how extraordinary it was until Hiserabi discovered they could smuggle small objects within it. Another design sacrifice the Verin took was to give Hiserabi a lighter bone structure. This made them easy to break but also gave them gravity-defying reputations.