SIMA (סִימָה).  Unisex.  Aramaic.  According to Kolatch, in his Complete Dictionary of English and Hebrew First Names (1984), the name means "treasure."  It may have been the name of a goddess; see notes below.

    Greek and Latin Inscriptions containing Semitic Names.—In Eph. Sem. Ep. II, 1908, pp. 323-344, M. Lidzbarski collects the Greek and Latin inscriptions containing Semitic material that have been published within the last two or three years.  Among these are a text from Kefer Nebo that mentions Sima as a male instead of a female divinity, and along with him "the fellow-occupant of the bethel" and "the lion" as companion deities;... (American Journal of Archaeology, v.13, 1909)

... In his aritcle, Inscription bilingue de Deir el-Qala'a, in Revue archeologique, 1893, p. 29, he has put forth much evidence for the existence of a goddess, Sima or Shima, whom he identifies on the one hand with Semiramis, on the other hand with the Ashima of 2 Ki. 17.  He suggests therefore that the Jewish accusation against the Samaritans may go back to the actual cult of the Hamathite deity Semiramis, under the form of a dove, practiced by the Hamathite colony in Samaria.  On the other hand this cult may have been introduced much later, in the age of Hadrian or subsequent syncretizing emperors.  But to sum up, there is nothing to show for the legend that the Samaritan sect itself ever worshipped the dove... (The Samaritans, the Earliest Jewish Sect, Montgomery, 1907)