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Meaning of coak

coak

Pronunciation: (kōk), [key]
— n. Carpentry.
  1. (in a scarf joint) a tenon in one member fitting into a corresponding recess of the other.
  2. a dowel through overlapping timbers to prevent one from sliding across the other.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.