A chill ran down his spine as he explored.

Meaning: This sentence describes a feeling of coldness running down the person's spine, creating a sense of unease and fear.

Choice of Words: Chill means a feeling of coldness. Ran means to move quickly. Down means from a higher to a lower position. Spine is the backbone. When you put them together, "A chill ran down his spine as he explored" creates an image of a cold feeling moving down the person's back as they explored.

Alternative Expressions

Related Expressions