Heb. hereb, "the waster," a sharp instrument for circumcision (Joshua 5:2,3, lit. "knives of flint;" Compare Exodus 4:25); a razor (Ezekiel 5:1); a graving tool (Exodus 20:25); an axe (Ezekiel 26:9).
Heb. maakeleth, a large knife for slaughtering and cutting up food (Genesis 22:6,10; Proverbs 30:14).
Heb. sakkin, a knife for any purpose, a table knife (Proverbs 23:2).
Heb. mahalaph, a butcher's knife for slaughtering the victims offered in sacrifice (Ezra 1:9).
Smaller knives (Heb. ta'ar, Jeremiah 36:26) were used for sharpening pens. The pruning-knives mentioned in Isaiah 18:5 (Heb. mizmaroth) were probably curved knives.
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain, copy freely.
Easton, Matthew George. "Entry for 'Knife'". "Easton's Bible Dictionary".