This is the 5254th most frequent Catalan word.
boca
Mouth.
Used as 'mouth', referring to the opening of the cave.
La boca de la cova és molt ampla.
The mouth of the cave is very wide.
Refers to the anatomical mouth, used when speaking or eating.
Parla amb cura que tens la boca plena.
Speak carefully as your mouth is full.
Again used as 'mouth', but this time referring to the opening of a tunnel.