This is the 1552nd most frequent Spanish word.
alemán
German.
Here, 'alemán' refers to the German language.
El alemán es un idioma muy interesante.
German is a very interesting language.
In this sentence, 'alemán' is used as an adjective to describe something as being from Germany, in this case, the watch.
Ella compró un reloj alemán muy elegante.
She bought a very elegant German watch.
Here, 'alemán' is a noun, referring to a person from Germany.