1. (v. i.) To change into curd; to coagulate; as, rennet causes milk to curdle.

2. (v. i.) To thicken; to congeal.

3. (v. t.) To change into curd; to cause to coagulate.

4. (v. t.) To congeal or thicken.

beat up cake churn clabber clot clump cluster coagulate colloid colloidize concrete condense congeal cream curd emulsify emulsionize ferment gel gelatinate gelatinize go off incrassate inspissate jell jellify jelly knot lopper lump set sour spoil thick thicken turn whip