1. (n.) An instrument consisting of a thin blade, usually of steel and having a sharp edge for cutting, fastened to a handle, but of many different forms and names for different uses; as, table knife, drawing knife, putty knife, pallet knife, pocketknife, penknife, chopping knife, etc..

2. (n.) A sword or dagger.

3. (v. t.) To prune with the knife.

4. (v. t.) To cut or stab with a knife.

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