phlebectomy: surgical removal or all or part of a vein; sometimes done in cases of severe varicose veins
operation: a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body
bloodroot: perennial woodland native of North America having a red root and red sap and bearing a solitary lobed leaf and white flower in early spring and having acrid emetic properties; rootstock used as a stimulant and expectorant