der Schnabel
beak
The hard, protruding mouthpart of a bird.
Der Papagei knackte die Nüsse mit seinem kräftigen Schnabel.
The parrot cracked the nuts with its strong beak.

beak
Loading your saved state.
beak
The hard, protruding mouthpart of a bird.
Der Papagei knackte die Nüsse mit seinem kräftigen Schnabel.
The parrot cracked the nuts with its strong beak.

The meaning of 'Schnabel' (beak) is usually clear. In a biological context, it refers to birds; colloquially, to the human mouth; and with objects, to a pouring opening.
Der Pelikan hat einen riesigen Schnabel.
The pelican has a huge beak.
When 'Schnabel' (beak/mouth) is used for the human mouth, it is always colloquial and often rude or disrespectful. You should use it only in very informal situations.
Dem Kind ist ein großer Schnabel gewachsen, es redet den ganzen Tag.
The child has gotten a big mouth; he talks all day.
The command 'Halt den Schnabel!' means 'Be quiet!' It is a very common but rude expression and is often used when someone is annoyed.
Als er nicht aufhörte zu reden, sagte sie wütend: „Jetzt halt endlich den Schnabel!“
When he wouldn't stop talking, she said angrily, 'Now finally shut your mouth!'
mouth
'der Mund' and 'der Schnabel' can both mean the place with which a living being eats or makes sounds. 'Mund' is the normal word for humans and many animals. 'Schnabel' is used mainly for birds, because it is hard and protruding. Colloquially, 'Schnabel' can also refer to the human mouth, but then it often sounds rude or derogatory. Learners may confuse the words because both describe a similar body function. The safe rule is: for humans, you normally say 'Mund'; for birds, 'Schnabel'.

Der Vogel hält ein kleines Stück Brot im Schnabel.
The bird is holding a small piece of bread in its beak.
Nach dem Unfall blutet der Fahrer am Mund.
After the accident, the driver is bleeding from the mouth.