astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole

channel - a deep and relatively narrow body of water (as in a river or a harbor or a strait linking two larger bodies) that allows the best passage for vessels; "the ship went aground in the channel"

pore - any small opening in the skin or outer surface of an animal

passageway, passage - a path or channel or duct through or along which something may pass; "the nasal passages"

canalis vertebralis, spinal canal, vertebral canal - the canal in successive vertebrae through which the spinal cord passes

ductule, ductulus - a very small duct

canaliculus - a small canal or duct as in some bones and parts of plants

canal of Schlemm, Schlemm's canal, sinus venosus sclerae - a circular canal in the eye that drains aqueous humor from the anterior chamber of the eye into the anterior ciliary veins

venous sinus, sinus - a wide channel containing blood; does not have the coating of an ordinary blood vessel

ampulla - the dilated portion of a canal or duct especially of the semicircular canals of the ear

lachrymal duct, lacrimal duct, tear duct - any of several small ducts that carry tears from the lacrimal glands

nasolacrimal duct - a duct that carries tears from the lacrimal sac to the nasal cavity

Haversian canal - any of the many tiny canals that contain blood vessels and connective tissue and that form a network in bone

hepatic duct - the duct that drains bile from the liver

canalis inguinalis, inguinal canal - oblique passage through the lower abdominal wall; in males it is the passage through which the testes descend into the scrotum and it contains the spermatic cord; in females it transmits the round ligament of the uterus

bile duct, common bile duct - a duct formed by the hepatic and cystic ducts; opens into the duodenum

pancreatic duct - a duct connecting the pancreas with the intestine

lymph vessel, lymphatic vessel - a vascular duct that carries lymph which is eventually added to the venous blood circulation

salivary duct - a duct through which saliva passes from the salivary gland into the mouth

aqueductus cerebri, cerebral aqueduct, Sylvian aqueduct - a canal connecting the third and fourth ventricles

ureter - either of a pair of thick-walled tubes that carry urine from the kidney to the urinary bladder

urethra - duct through which urine is discharged in most mammals and which serves as the male genital duct

canalis cervicis uteri, cervical canal - a spindle-shaped canal extending from the uterus to the vagina

umbilical cord - membranous duct connecting the fetus with the placenta

vagina - the lower part of the female reproductive tract; a moist canal in female mammals extending from the labia minora to the uterus; "the vagina receives the penis during coitus"; "the vagina is elastic enough to allow the passage of a fetus"

epididymis - a convoluted tubule in each testis; carries sperm to vas deferens

ductus deferens, vas deferens - a duct that carries spermatozoa from the epididymis to the ejaculatory duct

seminal duct - the efferent duct of the testis in man

ejaculatory duct - a part of the seminal duct formed by the duct from the seminal vesicle and the vas deferens; passes through the prostate gland

cartilaginous tube - a duct with cartilaginous walls

bronchiole - any of the smallest bronchial ducts; ending in alveoli

alimentary canal, alimentary tract, digestive tract, digestive tube, gastrointestinal tract, GI tract - tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and elimination

lactiferous duct - ducts of the mammary gland that carry milk to the nipple

Caledonian Canal - a canal in northern Scotland that links North Sea with the Atlantic Ocean; runs diagonally between Moray Firth at the northeastern end and Loch Linnhe at the southwestern end; now little used

cut - a canal made by erosion or excavation

industrial watercourse - a canal that is operated by one or more industries

lock chamber, lock - enclosure consisting of a section of canal that can be closed to control the water level; used to raise or lower vessels that pass through it

lockage - a system of locks in a canal or waterway

raceway, race - a canal for a current of water

ship canal, shipway - a canal large enough for sea-going vessels

waterway, watercourse - a conduit through which water flows

Grand Canal - an inland waterway 1000 miles long in eastern China; extends from Tianjin in the north to Hangzhou in the south

Grand Canal - the major waterway in Venice, Italy

Cape Cod Canal - a canal connecting Cape Cod Bay with Buzzards Bay

Erie Canal - an artificial waterway connecting the Hudson river at Albany with Lake Erie at Buffalo; built in the 19th century; now part of the New York State Barge Canal

New York State Barge Canal - a system of canals crossing New York State and connecting the Great Lakes with the Hudson River and Lake Champlain

furnish, provide, supply, render - provide or furnish with; "We provided the room with an electrical heater"