tap (someone) on the shoulder

Translations
постучать (кому-то) по плечу
He tapped her on the shoulder to get her attention.
Он постучал ей по плечу, чтобы привлечь её внимание.
Definitions
To lightly touch or hit someone on the shoulder, often to get their attention or to signal them.
Words
shoulder

noun
плечо
tap

verb
стучать