ppl. adj. (common).First-rate; extra good; about the best possible. Cf., CLIPPING, THUMPING, WHOPPING, BATTLING, etc.
1868. Daily Telegraph, 6 June. Vermouth was a CLINKING good horse.
1887. The Sporting Times, 12 March, p. 2, col. 2. Prince Henry must be a CLINKING good horse when in the humour to go.
1889. Polytechnic Magazine, 24 Oct., p. 263. Soon afterwards the Poly. obtained a free kick, and Young notched a point for them. Heard again steered the ball to the Clapham goal, and Toghill put in a CLINKING shot which just shaved the upright.