This is the 11159th most frequent Portuguese word.
lábio
Lip.
Here, 'lábio' is used to describe the 'lip' as a physical part that can be hurt.
O jogador cortou o lábio durante o jogo.
The player injured their lip during the game.
The word 'lábio' in this sentence refers to the anatomical feature 'lip', specifying 'lower lip'.
Eu passei batom no lábio inferior.
I applied lipstick on the lower lip.
In this context, 'lábio' refers to 'lips' as a functional part used in playing a musical instrument or other activity requiring motor skills.