timbre

1. The quality of a sound independent of its pitch and volume. (countable, uncountable)
2. The pitch of a sound as heard by the ear, described relative to its absolute pitch. (countable, uncountable) · When someone speaks after inhaling helium, his voice has a higher timbre. With sulfur hexafluoride, the result is a lower timbre.
3. The crest on a (helmet atop a) coat of arms. (countable, uncountable)

الجمع timbres