clot
/klɔt; klɑt/ n
1 half-solid lump formed from a liquid, eg from blood when it is exposed to the air （液体结成的）凝块（如血块）: blood clots 血块.
2 (Brit infml joc 口, 谑) stupid person; fool 笨蛋; 傻瓜
You silly clot! 你这个大笨蛋! clot, v (-tt-) [I, Tn]
(cause sth to) form clots （使某物）凝固
A haemophiliac's blood will not clot properly. 血友病患者的血液凝固不良.