Acuteness

1. n. Violence of a disease, which brings it speedily to a crisis.
2. n. The quality of being acute or pointed; sharpness; as, the acuteness of an angle.
3. n. The faculty of nice discernment or perception; acumen; keenness; sharpness; sensitiveness; — applied to the senses, or the understanding. By acuteness of feeling, we perceive small objects or slight impressions: by acuteness of intellect, we discern nice distinctions.
4. n. Shrillness; high pitch; — said of sounds.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.