This dictionary explains and translates each word; gives synonyms and rhymes; presents a grammatical analysis of the word.
Complete English-Hebrew & Hebrew-English Dictionaries -- Alcalay
Judaica Ref PJ4833 .A42 1994
Hebrew Dictionary -- Even-Shoshan
Judaica Ref PJ4830 .E84 2003
Milon Olami le-Ivrit Meduberet (Ben Amotz and Ben Yehuda)
Judaica Ref PJ4845 .B4
There are many other dictionaries in the same shelf range in Judaica Reference, as well as many subject specific dictionaries, especially for the sciences