Acumen

[Lat., a sharp point.] The faculty of nice discrimination; quickne of perception; acutene ; sharpne of intellect; discernment. Acu'mina. [Lat. acumen , a point.] Omens taken by the ancients from the points of spears or swords. Acuʼminate, v. n. To end in a sharp point; as, "this is not acuminated as the rest, but seemeth cut off." Acu'minate, v. a. To sharpen.