brown
Braun is the German word for the color brown. It is used in the same way as in English, to describe things that have this color. For example, one could say "Das Haus ist braun", which means "The house is brown".
The dog is brown.
This sentence is indicating the colour of a dog. In German, colour is expressed after the noun it refers to.
I have brown hair.
This sentence is constructed by stating the subject, the verb 'haben' (to have), and finally the noun 'Haare' (hair) with its modifying adjective 'braune' (brown).
His eyes are brown.
This sentence describes the colour of someone's eyes. In German, the verb 'sind' (are) is used to link the subject with its adjective, and the adjective comes after the noun it describes.