horsebackWiktionary 原文中文来自 ECDICTn.马背adv.在马背上，骑在马上构词拆分horse词根/词干+back词根/词干演变路径（由近及远）英语继承自 ←中古英语 horsebacke词源说明From Middle English horsebacke, horsebak, horsbak, equivalent to horse + back.释义（英文）名词 Noun(usually with on, upon, etc.) The back of a horse.(countable) A ridge of sand, gravel, and boulders.副词 AdverbOn the back of a horse.词族派生词（9）horsebackeregg on horsebackman on horsebackangels on horsebackballet on horsebackdevils on horseback