noun
fine split; splinter; rough edge
Refers to a small, thin piece of wood, skin, or other material that has peeled or split, often with a rough edge. Commonly used for wood splinters or the frayed skin around nails.
木のささくれが指に刺さった。
A splinter from the wood got stuck in my finger.
乾燥すると指にささくれができやすい。
When it's dry, I tend to get hangnails on my fingers.