单词：ullage 

名词

• 
  [1.n.ullage] (同义词:[ullage( n. 不足量, 损耗 )]  )
• 
  注释列句：the amount that a container (as a wine bottle or tank) lacks of being full
• 上位词 -> [indefinite_quantity]  [measure( n. 尺寸, 量度器, 量度标准, 方法, 测量, 措施 vt. 测量, 测度, 估量, 分派, 权衡, 调节 vi. 量 )]  [abstraction( n. 提取 )]  [entity( n. 实体 )]