cyst
🇺🇸
/sɪst/
🇬🇧
/sɪst/
A sac-like pocket that is filled with fluid, air, or other substances, which can form on or inside the body.
The doctor discovered a cyst on the patient's skin that needed to be drained.
医生在病人的皮肤上发现了一个需要引流的囊肿。