An artificial channel that is constructed to convey water from one location to another.
A structure carrying water over a river or depression, especially in regards to ancient aqueducts.
A structure conveying fluid, such as the cerebral aqueduct or vestibular aqueduct.
A short phrase that begins the caption of a photograph.
An introduction; something that leads into the beginning of something.
A region of data at the beginning of a compact disc, holding the table of contents.