das Geburtstagskind
birthday boy/girl
The person whose birthday it is on a particular day and who is being celebrated.
Alle Geschenke auf dem Tisch sind für das Geburtstagskind.
All the presents on the table are for the birthday boy/girl.

birthday boy/girl
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birthday boy/girl
The person whose birthday it is on a particular day and who is being celebrated.
Alle Geschenke auf dem Tisch sind für das Geburtstagskind.
All the presents on the table are for the birthday boy/girl.

The word is made up of 'Geburtstag' (birthday) and 'Kind' (child). So it literally describes the 'child of the birthday,' regardless of the person's actual age.
Auch mit 80 Jahren ist man am eigenen Geburtstag das Geburtstagskind.
Even at 80, you are the birthday boy/girl on your own birthday.
'Das Geburtstagskind' (the birthday boy/girl) is always neuter, even when it refers to a man or a woman. The article is always 'das'.
Der Kuchen ist für das Geburtstagskind, und sie ist schon ganz aufgeregt.
The cake is for the birthday girl, and she is already very excited.
Common verbs are 'dem Geburtstagskind gratulieren' (to congratulate the birthday boy/girl, with dative) or 'das Geburtstagskind feiern' (to celebrate the birthday boy/girl). Gifts are often 'für das Geburtstagskind' (for the birthday boy/girl, with accusative).
Wir haben dem Geburtstagskind alle zusammen ein Lied gesungen.
We all sang a song together for the birthday boy/girl.
child
'das Kind' and 'das Geburtstagskind' can look similar, but they do not mean the same thing. 'Kind' means a young person. 'Geburtstagskind' means the person whose birthday it is and who is being celebrated. This person can be a child, a teenager, or an adult. Learners may confuse the word because it contains 'Kind'. But 'Geburtstagskind' is not about age; it is about the birthday.

Zum Abschied haben die Gäste dem Geburtstagskind ein Lied gesungen.
As they were leaving, the guests sang a song for the birthday boy/girl.
In der Küche malt das Kind eine Karte für seine Oma.
In the kitchen, the child is drawing a card for their grandma.