The English of "1 arab" is one Arab.
The word "arab" is a noun referring to a person of Arab descent. It is important to use this term respectfully and avoid any generalizations or stereotypes.
The word "arab" can also refer to the Arabic language, culture, or region. However, in the context of "1 arab", the most likely meaning is a person of Arab descent.
It's essential to use respectful and accurate language when discussing people of different backgrounds and cultures.