Definition of "gravure"

for too long have the walls of our houses been adorned with examples of effete Old World portrait gravure.

1916 March 25, Irvin S. Cobb, “"Unaccustomed as I am—"”, in Saturday Evening Post‎

THE POCKET ENCYCLOPAEDIA OF BRITISH STEAM LOCOMOTIVES. By O. S. Nock. Blandford Press. 18s.Mr. Nock, he remarks in his preface, was "incredulous" when the idea of this book of 192 colour gravure illustrations of a representative collection of British steam locomotives from Locomotion to BR's Evening Star was broached to him.

1964 December, “New Books”, in Modern Railways, page 429