How to sign: a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance
"the tear duct was obstructed"; "the alimentary canal"; "poison is released through a channel in the snake's fangs";
Similiar / Same: duct, canal, channel
Categories: passage, passageway
Within this category: alimentary canal, bronchiole, canaliculus, canal of Schlemm, cartilaginous tube, cerebral aqueduct, cervical canal, common bile duct, ductule, ejaculatory duct, epididymis, Haversian canal, hepatic duct, inguinal canal, lacrimal duct, lactiferous duct, lymph vessel, nasolacrimal duct, pancreatic duct, pore, salivary duct, seminal duct, spinal canal, umbilical cord, ureter, urethra, vagina, vas deferens, venous sinus