de ouvido

by ear

→ de
phrase Uncommon #19,663
by ear Often used for playing music or doing something without reading music or instructions. In expressions like "dor de ouvido", it means "ear" as in "earache".
PO: Aprendi a tocar violão de ouvido.
EN: I learned to play guitar by ear.

Ele sabia tocar violão de ouvido, sem partitura.

He knew how to play the guitar by ear, without sheet music.

Eu estou com uma infecção de ouvido.

I have an ear infection.

Ela toca piano de ouvido.

She plays the piano by ear.

Tom toca piano de ouvido.

Tom plays the piano by ear.

Estou com dor de ouvido.

I have an earache.

Tom está com dor de ouvido.

Tom has an earache.

Escute o som, dirija de ouvido.

Listen to the sound, drive by ear.

— Diva: Paixão Perigosa (1981)

Tom está com infecção de ouvido.

Tom has an ear infection.

Tom toca gaita de ouvido.

Tom plays the harmonica by ear.