[f. TIP v.4 + -ING1.] The action of TIP v.4; the bestowing of gratuities: see TIP v.4 2.
1761. R. Lloyd, To G. Colman, Poet. Wks. 1774, I. 113. And walking gravely thro’ the croud, Which stood obsequiously, and bow’d, To keep the fashion up of tipping, Dropt in each hand a golden pippin.
1869. in Daily News, 24 July. A system of tipping had prevailed at Somerset-house and in the dockyards … which he would endeavour to uproot.
1893. G. E. Matheson, About Holland, 30. A good deal of tipping … has to be done in Holland.
