der Belgier
Belgian
A male citizen of Belgium or a male person from Belgium.
Mein neuer Kollege ist Belgier und spricht fließend Französisch und Niederländisch.
My new colleague is Belgian and speaks fluent French and Dutch.

Belgian
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Belgian
A male citizen of Belgium or a male person from Belgium.
Mein neuer Kollege ist Belgier und spricht fließend Französisch und Niederländisch.
My new colleague is Belgian and speaks fluent French and Dutch.

The word is derived from the country name 'Belgien' (Belgium). The ending '-er' is often used in German to refer to male inhabitants of countries or cities.
Er ist Belgier, aber seine Eltern kommen aus Italien.
He is Belgian, but his parents come from Italy.
'Der Belgier' (the Belgian man) is part of a word family. This includes the country ('Belgien' (Belgium)), the feminine form ('die Belgierin' (Belgian woman)), the plural ('die Belgier' (Belgians)), and the adjective ('belgisch' (Belgian)).
Belgische Schokolade ist auf der ganzen Welt berühmt.
Belgian chocolate is famous all over the world.
The meaning 'Pferderasse' (horse breed) is very rare and specific. You can recognize it from the context: if the topic is farming, horses, plows, or carriages, the animal may be meant. In all other social situations, it always means a person from Belgium.
Der alte Bauer zeigte uns stolz seinen kräftigen Belgier im Stall.
The old farmer proudly showed us his powerful Belgian horse in the stable.