whip-snake: any of several small fast-moving snakes with long whiplike tails
colubrid snake: mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes
coronary bypass: open-heart surgery in which the rib cage is opened and a section of a blood vessel is grafted from the aorta to the coronary artery to bypass the blocked section of the coronary artery and improve the blood supply to the heart