单词：ahem 

名词

• 
  [1.n.ahem] (同义词:[hem( n. 边, 缘, 摺边 v. 给...缝边, 包围 )]  [ahem( int. 啊咳, 咳嗽或清嗓子的声音 )]  )
• 
  注释列句：the utterance of a sound similar to clearing the throat; intended to get attention, express hesitancy, fill a pause, hide embarrassment, warn a friend, etc.
• 上位词 -> [utterance( n. 意见, 说话, 发表, 说话的方式, 死 )]  [auditory_communication]  [communication( n. 传达, 信息, 交通, 通讯 )]  [abstraction( n. 提取 )]  [entity( n. 实体 )]