பொருள் : An abnormal passage leading from a suppurating cavity to the body surface.
ஒத்த சொற்கள் : fistula
பொருள் : Any of various air-filled cavities especially in the bones of the skull.
பொருள் : A wide channel containing blood. Does not have the coating of an ordinary blood vessel.
ஒத்த சொற்கள் : venous sinus