Lewis & Short

Hīlōtae, ārum, m., = Εἵλωτες, the original inhabitants of the city Helos (Ἕλος), in Laconia, afterwards the bondsmen of the Spartans, the Helots, Nep. Paus. 3, 6.
Called also Ilotae, ārum, Liv. 34, 27, 9.