blind side

Translations
слепая зона
He didn't see the car coming from his blind side.
Он не заметил машину, подъехавшую из его слепой зоны.
Definitions
The area or direction that a person cannot see because it is outside their field of vision, often used to describe a vulnerable position where someone is unaware of potential danger or attack.
Words
blind

adjective
слепой
side

noun
сторона