Etymology: Middle English, from Anglo-French tun, ton, from Latin tonus tension, tone, from Greek tonos, literally, act of stretching; akin to Greek teinein to stretch — more at thin
Date: 14th century
1: vocal or musical sound of a specific quality <spoke in low tones><masculine tones>; especially: musical sound with respect to timbre and manner of expression 2 a: a sound of definite pitch and vibration b:whole step 3: accent or inflection expressive of a mood or emotion 4: the pitch of a word often used to express differences of meaning 5: a particular pitch or change of pitch constituting an element in the intonation of a phrase or sentence <high tone><low tone><mid tone><low-rising tone><falling tone> 6: style or manner of expression in speaking or writing <seemed wise to adopt a conciliatory tone> 7 a (1): color quality or value (2): a tint or shade of color b: the color that appreciably modifies a hue or white or black <gray walls of greenish tone> 8: the effect in painting of light and shade together with color 9 a: the state of a living body or of any of its organs or parts in which the functions are healthy and performed with due vigor b: normal tension or responsiveness to stimuli; specifically: muscular tonus 10 a: healthy elasticity :resiliencyb: general character, quality, or trend <a city's upbeat tone>c: frame of mind :mood