eat into

US /iːt ˈɪntuː/
UK /iːt ˈɪntuː/
"eat into" picture
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.