n.

1. （设备、机器等的）小故障，失灵，技术性的小毛病
2. 【电】短暂的电磁波干扰，短时脉冲波干扰
3. 【天】脉冲星的自转突变
4. （电视图像的）低频干扰
5. （计划等的）缺点；差错

n.

1. a sudden, usually temporary malfunction or fault of equipment.
   ▸an unexpected setback.
2. Astronomy  a brief irregularity in the rotation of a pulsar.