Splintery describes something — usually wood — that is full of splinters, or that breaks into sharp thin pieces instead of snapping cleanly. An old fence, a rough plank, a cheap chopstick: run your hand along it and you can feel it is splintery, because tiny sharp slivers are ready to come off into your skin. It also describes the way a thing breaks: geologists say a rock or a mineral has a splintery break when it comes apart in long sharp needles rather than in smooth flat faces. The word is not very common in everyday speech — most people would just say 'it's rough' or 'it'll give you splinters' — so when you do meet it, it is often in writing, describing a surface someone wants you to feel. Note that the definition line you may see attached to this word actually describes 'splinter', the noun; 'splintery' is the adjective made from it, meaning 'having or making splinters'.

多木刺的、會扎手的；（岩石、礦物）呈針狀碎裂的