(anatomy) A major vessel of the lymphatic system that originates in the abdomen and drains into the blood circulation at the commencement of the left brachiocephalic vein.

(anatomy) Any of a branching system of ducts that carry milk from the lobules of the mammary gland to the nipple

A propeller which is housed inside a duct to improve engine performance of aircraft.

A form of jet engine that possesses an inlet duct, such as a turbojet, ramjet, or turbofan. Rockets are not considered duct engines.

(anatomy) A short duct that leads from the gallbladder and unites with the common hepatic duct to form the common bile duct.

(anatomy) A structure connecting the rete testis with the initial section of the epididymis.

(anatomy) A duct that receives and concentrates urine from the distal convoluted tubule of nephrons and discharges it into the calyces of the renal pelvis.

(anatomy, ophthalmology) a duct that transmits tears from the lacrimal sac to the inferior meatus of the nose

(anatomy) A duct that transports tears from the lacrimal sac to the nasal cavity

(anatomy) A small channel, the end of which is visible on the margin of each eyelid, that drains the lacrimal fluid from the eye towards the lacrimal sac.