Marcus Jastrow, Dictionary of the Targumim, the Talmud Babli and Yerushalmi, and the Midrashic Literature

A classic and still standard resource, Marcus Jastrow's monumental dictionary remains unique in that it covers both the Hebrew and Aramaic languages in the literature of the rabbinic period.This online version of Tyndale House, allow you to access the dictionary easily by letters and head-page entry.