What is wormlike in shape; covered with wormlike elevations; marked with irregular fine lines of color, or with irregular wavy impressed lines like worm tracks; as, a vermiculate nut called?

vermiculate — Wormlike in shape; covered with wormlike elevations; marked with irregular fine lines of color, or with irregular wavy impressed lines like worm tracks; as, a vermiculate nut. (Webster's 1913.)

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