back of the neck
nounUK /ˌbæk əv ðə ˈnek/
US /ˌbæk əv ðə ˈnek/
The back of the neck is the part behind your neck.
She felt a cool breeze on the back of her neck.
OTHER MEANINGS
2. The rear part of a shirt or collar that touches the neck.
The tag on the back of the neck of his shirt was itchy.
3. A vulnerable or exposed spot, often used in phrases about danger.
The team was breathing down the back of the neck of their rivals.
4. The area where an animal is grabbed by its mother.
The mother cat carried her kitten by the back of the neck.