[f. STAMP v. + -AGE. Cf. F. estampage, étampage.]
1. The crushing (of tin-ore).
1910. Cal. Close Rolls, an. 1365, 113. 1,000 marks every year to be taken of the issue of the stampage of tin in Cornwall.
2. A copy or impression (of an inscription) made by stamping.
1880. Encycl. Brit., XIII. 118/2. No copy was obtained [of the rock inscription] until October 1838, when the traveller Masson made a calico stampage and an eye copy.
3. The amount charged or paid for the stamp or stamps of a postal packet; postage.
1887. Taken in, 88. I must not forget the stampage expenses; two miles out of Christ Church your letter will be 2d.
1888. Athenæum, 26 June, 762/1. It costs two or three times the amount of stampage for parcel post.