A sac of muscle or membrane in animals, in which a fluid is collected; esp. the urinary bladder.

【解】囊；膀胱；泡。

Any sac or blister, containing fluid or air.

水囊；气囊。

Anything puffed up or inflated.

任何膨胀的囊状物。

One who praises himself.

【俚】自夸者。