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Meaning of bonnet top

bon'net top"

Pronunciation: [key]
— U.S. Furniture. U.S. Furniture.
  1. a top to a secretary, highboy, etc., following in outline a broken pediment on the front. Cf. dome top, hooded top.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.