The present participle of 'gnarl,' describing the act of twisting, knotting, or snarling; or something that is becoming gnarled.
From the verb 'gnarl' plus the present participle suffix '-ing,' describing the ongoing action or process of becoming twisted or gnarled.
Watching time-lapse videos of wood grain twisting and gnarling during the growth process is hypnotic—you're literally watching the tree's response to wind and stress being recorded in real-time.
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