Defect of a twisted timber or of its wood.
1There are methods for readily detecting spiral grain.
2The spiral grain makes them a lot tougher than the tall, straight trees that grow where the wind doesn't blow so hard.
3Spiralling grain prices in recent months have startled governments long used to affordable rice, wheat, soy and maize.
4"Mitch said it's used to make Steinway pianos and other wooden instruments, because of its tight spiral grain, so I just thought..."
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