To sour or curdle.
Sour or curdled milk.
Wet clay or mud.
To form curds so that it no longer flows smoothly; to cause to form such curds. (usually said of milk)
To cause a liquid to spoil and form clumps so that it no longer flows smoothly
To clot or coagulate; to cause to congeal, such as through cold. (metaphorically of blood)