duct

1. A bodily passage or tube lined with epithelial cells and conveying a secretion or other substance (synset 105258141)
   "the tear duct was obstructed"; "the alimentary canal"; "poison is released through a channel in the snake's fangs"
   is a type of: passage, passageway - a path or channel or duct through or along which something may pass
   subtypes:

   • pore - any small opening in the skin or outer surface of an animal
   • 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
   • sinus, venous sinus - a wide channel containing blood; does not have the coating of an ordinary blood vessel
   • 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, 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
   • 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
   has: ampulla - the dilated portion of a canal or duct especially of the semicircular canals of the ear
   same as: canal, channel, epithelial duct
2. A continuous tube formed by a row of elongated cells lacking intervening end walls (synset 113111816)
   is a type of: plant part, plant structure - any part of a plant or fungus
   subtypes: laticifer - a plant duct containing latex
   is a part of: tracheophyte, vascular plant - green plant having a vascular system: ferns, gymnosperms, angiosperms
3. An enclosed conduit for a fluid (synset 103258101)
   is a type of: conduit - a passage (a pipe or tunnel) through which water or electric wires can pass
   subtypes:

   • air-intake - a duct that admits air to be mixed with fuel
   • air duct, air passage, airway - a duct that provides ventilation (as in mines)

Other Searches

• Rhyme: Dillfrog, RhymeZone
• Definition: Wiktionary, Dictionary.com, Wikipedia, Merriam-Webster, WordNet, Power Thesaurus
• Imagery: Google, Flickr, Bing