n. In music: In Greek music, a modification of the usual diatonic scale.n. The sign by which a note is raised or lowered a semitone; a sharp, ♯, or a flat, ♭.n. An eighth-note or quaver, ♪. See croma.n. A semitone or half-step, whether large or small. See semitone.n. In rhetoric, a figure of speech which consists in speaking so as not to offend the hearer.n. The degree of departure of a color-sensation from that of white or gray; the intensity of distinctive hue; color-intensity.n. [capitalized] [NL.] In entomology, a genus of lepidopterous insects.n. A double sharp, ×, or double flat, d♭.