Excellent: http://lisaan.net/
www.tolueislam.com/Parwez/expo/expo_glossary.htm (Arabic-English)
Lughaat Al Qur'an - G. Parwez
(English: Word
doc or PDF,
Volume1, Two, Three, Four or online
version)
www.emuslim.com/quran/lughat.asp (English, Urdu, Bengali)
www.muhaddith.org/lexicons.html (Arabic & English)
Lisan al-Arab, Taj al-Arus, Qamus al-muhit
Lisan al
Arab free download (right click, save as)
Lisan al Arab, al Qaamuus al Muheet, Maqaayees Allugha, al Sahaah fil lugha and al AAbaab al Zaakhir
al-Mufradat
fi
Gharib
al-Quran
by
al-Raghib al-Asfahani (scribd link)
The
earliest
Classical
Arabic
Dictionary:
Kitab
al
Ayn
Hans
Wehr (Modern Standard Arabic dictionary)
Dictionary
of
Holy
Quran
by
Abdul Manan Omar (also with grammar information)
islamusa.org/dictionary.pdf (PDF right click, save as)
Arabic-English
Dictionary
of
Quranic
usage (pdf)
Lane's
Arabic-English lexicon FREE online PDF
Lane's Lexicon
- viewable online (or HERE
with word search, or HERE)
Lane's
Arabic-English lexicon (small files, for slow connections
only)