Tone  —n. 1 musical or vocal sound, esp. With reference to its pitch, quality, and strength. 2 (often in pl.) Modulation of the voice expressing a particular feeling or mood (a cheerful tone). 3 manner of expression in writing or speaking. 4 mus. A musical sound, esp. Of a definite pitch and character. B interval of a major second, e.g. C–d. 5 a general effect of colour or of light and shade in a picture. B tint or shade of a colour. 6 prevailing character of the morals and sentiments etc. In a group. 7 proper firmness of the body. 8 state of good or specified health. —v. (-ning) 1 give the desired tone to. 2 modify the tone of. 3 (often foll. By to) attune. 4 (foll. By with) (esp. Of colour) be in harmony with.  tone down make or become softer in tone. Tone up make or become stronger in tone.  toneless adj. Tonelessly adv. Toner n. [greek tonos from teino stretch]