Admiral - أمير amīr, commander. Amīr al-bihār = "commander of the seas" was a title in use in Arabic Sicily, and was continued by the Normans in Sicily in a Latinized form
Adobe - الطوبة al-ṭūba | at-tūba,"the brick".
Algebra - الجبر al-jabr, completing, or restoring broken parts
Arsenal - دار الصناعة dār aṣ-ṣināʿa, house of manufacturing. Ibn Khaldoun quotes an order of the Caliph Abdalmelic to build at Tunis a dār ṣināʿa for the construction of everything necessary for the equipment and armament of [seagoing] vessels.
Candy- قندي qandī, sugared
Magazine- ن مخاز makhāzin (from khazan, to store), storehouses
Soda / Sodium - سوادة suwwāda, سويد suwayd, or سويدة suwayda, one or more species of plant growing in salty environments whose ashes yielded sodium carbonate to be used as an ingredient in glass-making.
Traffic - تفريق tafriq "distribution"
Tuna- التون al-tūn, tunafish
More can be found here: http://en.wikipedia.org/wiki/List_of_Arabic_loanwords_in_English