Easton's Bible Dictionary
(1.) Heb. hereb, “the waster,” a sharp instrument for circumcision (Josh. 5:2, 3, lit. “knives of flint;” comp. Ex. 4:25); a razor (Ezek. 5:1); a graving tool (Ex. 20:25); an axe (Ezek. 26:9). (2.) Heb. maakeleth, a large knife for slaughtering and cutting up food (Gen. 22:6, 10; Prov. 30:14). (3.) Heb. sakkin, a knife for any purpose, a table knife (Prov. 23:2). (4.) Heb. mahalaph, a butcher’s knife for slaughtering the victims offered in sacrifice (Ezra 1:9). (5.) Smaller knives (Heb. ta’ar, Jer. 36:26) were used for sharpening pens. The pruning-knives mentioned in Isa. 18:5 (Heb. mizmaroth) were probably curved knives.
International Standard Bible Encyclopedia (ISBE)
<p>nif:</p><p>(1) ma'akheleth, literally, an instrument for eating; but used of large knives for slaying animals, cutting up a carcass or a sacrificial victim (Ge 22:6,10; Jud 19:29; Pr 30:14).</p><p>(2) cherebh, rendered generally "sword," but in Jos 5:2,3 of stone knives for circumcision (compare Ex 4:25), probably of similar knives in 1Ki 18:28, used by Baal prophets in gashing themselves. In Eze 5:12 the King James Version, "knife," probably better the Revised Version (British and American), "sword."</p><p>(3) ta`ar, usually rendered "razor," in combination with ha-copher, "knife of the writer," or "penknife" (Jer 36:23).</p><p>(4) machalaphim, "slaughter-knives" (Ezr 1:9).</p><p>(5) sakkin, Aramaic, "knife" (Pr 23:2). Early knives were commonly made of sharp stones, especially of flint, later of bronze and iron. The-former remained in use in religious ceremonies long after the latter were in common use.</p><p>Knives were not generally used at meals, meats being cut into bits before served, and bread being. broken into fragments. Herod used a knife for paring apples, and attempted suicide with the instrument (Josephus, Ant, XVII, vii, 1; BJ, I, xxxiii, 7).</p><p>Edward Bagby Pollard</p>