flaw

ot noun

1. A crack or breach, a gap or fissure; a defect of continuity or cohesion. That vase has a flaw.
2. A flake, fragment, or shiver.
3. A thin cake, as of ice.
4. A defect, fault, or imperfection, especially one that is hidden.

fe’l verb

1. To add a flaw to, to make imperfect or defective.
2. To become imperfect or defective; to crack or break.