| 单词 | spring-tree bar | 
| 释义 | > as lemmasspring-tree bar   A transverse bar used to harness horses to a carriage, plough, etc., and to which the traces are attached; a swingletree. Also more fully  spring-tree bar. ΘΚΠ society > travel > means of travel > a conveyance > vehicle > cart, carriage, or wagon > parts of cart or carriage > 			[noun]		 > swingle-tree swing-tree1396 swingletree1483 spring-tree1600 bridge tree1607 whippin1697 whippletree1733 cross-tree1765 splinter-bar1765 swindle-tree1801 shackle-bar1834 whiffletree1842 heel tree1846 single-tree1847 swingle-bar1849 pulling-tree1895 trace-block1900 1600    P. Holland tr.  Livy Rom. Hist.  xxxvii. 568  				At each end of the..spring-tree [L. iugis] there were two blades stood out. 1648    Bp. J. Wilkins Math. Magick  i. iv. 26  				At each of its extremities there is a severall spring-tree..to which either horses or oxen may be fastned. 1699    A. Boyer Royal Dict. at Spring  				The Spring-tree-bar of a Coach. a1723    C. Wren Disc. Archit. in  L. Phillimore Sir C. Wren Family & Times 		(1881)	 346  				At the end of this Rope is a Spring-tree (as our Coachmen use for ye two fore Horses). 1766    Compl. Farmer at Potatoe  				I put a double spring-tree bar to the cultivator, to avoid the poaching of the horses. 1852    Dundee Courier 11 Aug.  				The best Equalising Spring-Tree or Draught Bar. < as lemmas | 
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