单词	whiffletree
释义	whiffletree /ˈwɪf(ə)ltriː / noun North American A swingletree.The invention of the horse shoe, the whiffletree, and the spring carriage made travel easier.... I had to get out and let the whiffletrees loose, then the team managed to get out on solid ground. This works something like a hollow auger; it is used for cutting tenons on poles, shafts, whiffletrees, etc. Origin Mid 19th century: variant of whippletree.
随便看	sorehead sorel sorely soreness sore point sore throat sorghum sori Soroptimist sororal sororicide sorority sorosis sorption sorrel sorrel tree Sorrento sorrily sorriness sorrow sorrowful sorrowfully sorrowful mystery sorrowfulness sorrowful tree

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