| 单词 | pumping nail | 
| 释义 | † pumping nailn. Printing. Obsolete.   A nail used in fastening the leather on a printer's ink-ball or ‘pumping-ball’ to the stock or handle. ΘΚΠ society > communication > printing > inking equipment > 			[noun]		 > inking ball > nail fastening ball to stock pumping nail1683 1683    J. Moxon Mech. Exercises II. 74  				For Pelts or Leather, Ball-Nails or Pumping-Nails, Wool or Hair.., the Press-man generally eases the Master-Printer of the trouble of choosing. 1688    R. Holme Acad. Armory  iii. 301/1  				Pumping Nails, with round Heads. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online September 2018). < | 
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