Emily Dickinson Lexicon

DUCT, n. [L. ductus, from duco, to lead. See Duke.]

1. Any tube or canal by which a fluid or other substance is conducted or conveyed. It is particularly used to denote the vessels of an animal body, by which the blood, chyle, lymph, &c., are carried from one part to another, and the vessels of plants in which the sap is conveyed.
2. Guidance, direction. [Little used.] – Hammond.