单词：ahorseback 

形容词

• 
  [1.a.ahorseback] (同义词:[ahorse( adj. 在马上的 adv. 在马上 )]  [ahorseback]  )
• 
  注释列句：traveling on horseback; "a file of men ahorseback passed by"
• 近义词 -> [moving( vbl. 移动 )] 
  

副词

• 
  [1.r.ahorseback] (同义词:[horseback( n. 马背, 隆起的条状地带 )]  [ahorse( adj. 在马上的 adv. 在马上 )]  [ahorseback]  )
• 
  注释列句：on the back of a horse; "he rode horseback to town"; "managed to escape ahorse"; "policeman patrolled the streets ahorseback"