scalpel

n. small straight surgical knife

A scalpel is a very sharp knife used for surgery, anatomical dissection, and various arts and crafts. Scalpels may be disposable or re-usable. Re-usable scalpels can have attached, resharpenable blades or, more commonly, non-attached, replaceable blades. Disposable scalpels usually have a plastic handle with an extensible blade (like a utility knife) and are used once, then the entire instrument discarded.
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Scalpel /scal·pel/ a small surgical knife usually having a convex edge. scal·pel n. A small straight knife with a thin sharp blade used in surgery [more]Scalpel - Community and Resources

Noun
1. a thin straight surgical knife used in dissection and surgery
(hypernym) surgical knife

n. scalpel, small straight surgical knife