What is pl. (Com.) The four large shell plates on the sides, and the five large ones of the middle, of the carapace of the sea turtle, which yield the best tortoise shell. De Colange called?

blade — pl. (Com.) The four large shell plates on the sides, and the five large ones of the middle, of the carapace of the sea turtle, which yield the best tortoise shell. De Colange. (Webster's 1913.)

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