This is the 854th most frequent Bulgarian word.
писмо
Letter.
In this sentence, 'писмо' refers to a written communication sent by mail or similar means.
Получих дългоочаквано писмо от приятеля ми.
I received a long-awaited letter from my friend.
Here, 'писмо' is used to describe a written letter crafted by someone.
Тя написа красиво писмо с изящен почерк.
She wrote a beautiful letter with elegant handwriting.
In this instance, 'писмо' signifies an exercise or an example of a written correspondence.