
1) Surgical knife
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https://www.crosswordclues.com/clue/bistoury

narrow surgical knife
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http://phrontistery.info/b.html

• (n.) A surgical instrument consisting of a slender knife, either straight or curved, generally used by introducing it beneath the part to be divided, and cutting towards the surface.
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http://thinkexist.com/dictionary/meaning/bistoury/

A long, narrow-bladed knife, with a straight or curved edge and sharp or blunt point (probe-point); used for opening or slitting cavities or hollow structures. ... Origin: Fr. Bistouri, fr. It. Dialect bistori, perh. Fr. Pistoia, Italy ... (05 Mar 2000) ...
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http://www.encyclo.co.uk/local/20973

(bis´tdbobr-re) a long, narrow surgical knife, straight or curved, used for incising abscesses and enlarging sinuses, fistulas, etc. Bistoury.
Found on
http://www.encyclo.co.uk/local/21001
Bis'tou·ry noun ;
plural Bistouries [ French
bistouri .] A surgical instrument consisting of a slender knife, either straight or curved, generally used by introducing it beneath the part to be divided, and cutting towards the surface.
Found on
http://www.encyclo.co.uk/webster/B/58

Type: Term Pronunciation: bis′tū-rē Definitions: 1. A long, narrow-bladed knife, with a straight or curved edge and sharp or blunt point (probe-point); used for opening or slitting cavities or hollow structures.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=10492

A bistoury is a surgical implement for making incisions, of various forms.
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http://www.probertencyclopaedia.com/browse/AB.HTM

a long, narrow surgical knife.
Found on
https://www.infoplease.com/dictionary/bistoury
No exact match found.