clot

1. N-COUNT A clot is a sticky lump that forms when blood dries up or becomes thick. (血液的) 凝块

He needed emergency surgery to remove a blood clot from his brain. 他需要紧急动手术以清除大脑中的一个血栓。

2. V-I When blood clots, it becomes thick and forms a lump. (血液) 凝结成块

The patient's blood refused to clot. 病人的血液无法凝结。