James W Bennett (forum: partial-commment)
http://community.logos.com/forums/p/30138/223444.aspx
There is a Targum Lexicon that comes with the purchase of the Targums from Logos for only $30. While it provides word meaning in the various dialects of Aramaic I believe it is limited to the vocabulary of the Targums. And if you are working with the Talmud you have to remember that even if a word entry exists in CAL the meaning can be very different from that used in the Talmud, something like 3-4 centuries of language evolution.