What is the definition of Sharp Ridged?

"Sharp ridged" is a fancy way of describing something that's like a skateboard with the most intense, jagged teeth you've ever seen - so sharp and pointed that it'd probably give you a bad case of the 'edge' headache. Imagine it like a haircut gone horribly wrong, but instead of just looking messy, it's literally cutting into your skin like a chef with a razor at the dinner table.

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Now, here's an edgy sentence to illustrate: "The detective's razor-sharp ridged fingerprints left no trace, only a trail of existential dread."