Curdle /(kûr"d'l)/

Cur·dle

Curdle

v. i.
  1. To change into curd; to coagulate; as, rennet causes milk to curdle.
  2. To thicken; to congeal.
    Then Mary could feel her heart's blood curdle cold.

Curdle

v. t.

imp. & p. p. Curdled; p. pr. & vb. n. Curdling

  1. To change into curd; to cause to coagulate.
  2. To congeal or thicken.
    My chill blood is curdled in my veins.