If you feel frightened, you can say, that you have shivers down your spine.
If you want to make someone feel afraid, you can send him/her shivers down his/her spine.
Now, the spine is the part of our body that we all know. According to the medical dictionary, the spine is the series of vertebrae forming the axis of the skeleton.
To shiver is to shake with cold or fear.
Sometimes, we use shivers down your spine to express excitement.
Let’s see some examples :
– Whenever I watch this movie, I feel a shiver down my spine.
– Her marvelous voice sends shivers down my spine.