Real Dictionary

Arabic
adjective: Something that is Arabic belongs or relates to the language, writing, or culture of the Arabs.
uncountable noun: Arabic is a language that is spoken in the Middle East and in parts of North Africa.

Arabic in American English
of Arabia
the Semitic language of the Arabs, spoken in Arabia, Syria, Jordan, Iraq, N Africa, etc. in various dialects
adjective: of, belonging to, or derived from the language or literature of the Arabs
noun: a Semitic language that developed out of the language of the Arabians of the time of Muhammad, now spoken in countries of the Middle East and North Africa

Arabic in British English
adjective: denoting or relating to this language, any of the peoples that speak it, or the countries in which it is spoken
noun: the language of the Arabs, spoken in a variety of dialects; the official language of many countries, including Algeria, Egypt, Iraq, Jordan, the Lebanon, Libya, Morocco, Saudi Arabia, Sudan, Syria, Tunisia, and Yemen. It is estimated to be the native lang