a. [ L. acuminatus, p. p. of acuminare to sharpen, fr. acumen. See Acumen. ] Tapering to a point; pointed;
v. t. To render sharp or keen. [ R. ] “To acuminate even despair.” Cowper. [ 1913 Webster ]
v. i. To end in, or come to, a sharp point. “Acuminating in a cone of prelacy.” Milton. [ 1913 Webster ]