a cable consisting of wires contained in a flexible metal tubing, used chiefly in wiring buildings and in supplying electric power to equipment.
near to or next to: a home by a lake. over the surface of, through the medium of, along, or using as a route: He came by the highway. She arrived by air. on, as a means of conveyance: They arrived by ship. to and beyond the vicinity of; past: He went by the church. […]
Also, by a hairbreadth or whisker . Very narrowly. For example, His serve was out by a hair , or We made our flight by a hairbreadth , or Dad missed hitting the pole by a whisker . The first two hyperboles for the very narrowest margin date from the 1300s and 1400s respectively; whisker […]