left-hander
- n a baseball pitcher who throws the ball with the left hand
- n a person who uses the left hand with greater skill than the right
left atrioventricular valve
- n valve with two cusps; situated between the left atrium and the left ventricle
left atrium
- n the left upper chamber of the heart that receives blood from the pulmonary veins
left atrium of the heart
- n the left upper chamber of the heart that receives blood from the pulmonary veins
left bank
- n the region of Paris on the southern bank of the Seine; a center of artistic and student life
left brain
- n the cerebral hemisphere to the left of the corpus callosum that controls the right half of the body
left coronary artery
- n arises from the left aortic sinus; supplies the left side of the heart
left field
- n the piece of ground in the outfield on the catcher's left
- n the fielding position of the player on a baseball team who is expected to field balls in the left third of the outfield (looking from home plate)
left gastric artery
- n a branch of the celiac artery that supplies the lesser curvature of the stomach and the abdominal part of the esophagus
left gastric vein
- n arises from a union of veins from the gastric cardia; runs in the lesser omentum; empties into the portal vein
left hander
- n a baseball pitcher who throws the ball with the left hand
left hemisphere
- n the cerebral hemisphere to the left of the corpus callosum that controls the right half of the body
left stage
- n the part of the stage on the actor's left as the actor faces the audience
left ventricle
- n the chamber on the left side of the heart that receives arterial blood from the left atrium and pumps it into the aorta