( superl. )
Having the quality of flexibility without brittleness; yielding to force without breaking; capable of resisting great strain; as, the ligaments of animals are remarkably tough.
( superl. )
Having the quality of flexibility without brittleness; yielding to force without breaking; capable of resisting great strain; as, the ligaments of animals are remarkably tough.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012