This is the 7154th most frequent German word.
futter
"Futter" means "feed" or "fodder" for animals; it can also mean "lining" in clothing or bags.
Here, 'Futter' is used to refer to pet food or feed for animals.
Der Hund freut sich auf sein Futter.
The dog is excited about his food.
'Futter' in this context means lining or padding, commonly used in textiles.
Die Arbeiter tragen Futter als Isolierung in die Kleidung ein.
The workers add lining as insulation into the clothing.
In this sentence, 'Futter' refers again to food but specifically for birds in the wild.