1. A daily record of personal experiences, thoughts, and feelings, typically kept private
She wrote in her diary every night before bed.
Ela escrevia no seu diário todas as noites antes de dormir.
2. A book or notebook with blank pages for recording daily events and appointments
I keep a diary to organize my schedule and remember important dates.
Mantenho um diário para organizar meu calendário e lembrar datas importantes.
3. A historical record of events written chronologically, often by a notable person
Anne Frank's diary is a powerful testament to the Holocaust.
O diário de Anne Frank é um testemunho poderoso do Holocausto.