puukko — meaning in English

English meaning

knife noun A tool with a flat, usually metal blade sharpened along one edge and fixed to a handle, used for cutting.

puukko is used for these senses in English:

hunting knife A knife optimized for use in hunting animals, usually with a substantial belly and sometimes with a back edge that is partially serrated#Adjective for sawing#Noun; fixed-blade and folding versions are both popular, and tasks such as field dressing, skinning#Noun, and bushcraft are anticipated.
knife A utensil or a tool designed for cutting, consisting of a flat piece of hard material, usually steel or other metal (the blade), usually sharpened on one edge, attached to a handle. The blade may be pointed for piercing.
knife A weapon designed with the aforementioned specifications intended for slashing or stabbing but too short to be called a sword; a dagger.
puukko A type of sharp, pointed knife of Nordic heritage, with a short blade and flat back; normally worn in a sheath on the waist, and used for woodcrafts or as a hunting knife.

noun A tool with a flat, usually metal blade sharpened along one edge and fixed to a handle, used for cutting.
verb To stab or cut someone with a knife.
verb To betray someone, especially a political ally.