Duct

1duct pronunciation: function: noun etymology: new latin ductus, from medieval latin, aqueduct, from latin, act of leading, from ducere to lead — more at towdate: 1667 1 : a bodily tube or vessel especially when carrying the secretion of a gland2 a : a pipe, tube, or channel that conveys a substance b : a pipe or tubular runway for carrying an electric power line, telephone cables, or other conductors3 : a tube or elongated cavity (as a xylem vessel) in plant tissue4 : a layer (as in the atmosphere or the ocean) which occurs under usually abnormal conditions and in which radio or sound waves are confined to a restricted path— duc;tal adjective — duct;less adjective