eat into
US /iːt ˈɪntuː/
UK /iːt ˈɪntuː/

1.
consumir, reduzir, diminuir
to use up a large part of something, especially money or time
:
•
Unexpected expenses are starting to eat into our savings.
Despesas inesperadas estão começando a consumir nossas economias.
•
The long commute eats into my free time every day.
O longo trajeto consome meu tempo livre todos os dias.
2.
corroer, deteriorar, consumir
to damage or destroy something gradually, especially by chemical action
:
•
The acid began to eat into the metal.
O ácido começou a corroer o metal.
•
Rust can eat into the structure of a bridge over time.
A ferrugem pode corroer a estrutura de uma ponte com o tempo.