Pilot
early 16th century (denoting a person who steers a ship): from French pilote, from medieval Latin pilotus, an alteration of pedota, based on Greek pēdon ‘oar’, (plural) ‘rudder’.
wiktionary
From Middle French pilot, pillot, from Italian pilota, piloto, older also pedotta, pedot(t)o (the form in pil- is probably influenced by pileggiare(“to sail, navigate”)); ultimately from unattested Byzantine Greek *πηδώτης(*pēdṓtēs, “helmsman”), from Ancient Greek πηδόν(pēdón, “blade of an oar, oar”), [1] hence also Ancient and Modern Greek πηδάλιον(pēdálion, “rudder”). [2]
etymonline
pilot (n.)
1510s, "one who steers a ship," especially one who has charge of the helm when the ship is passing in or out of harbor, from French pillote (16c.), from Italian piloto, supposed to be an alteration of Old Italian pedoto, which usually is said to be from Medieval Greek *pedotes "rudder, helmsman," from Greek pedon "steering oar," related to pous (genitive podos) "foot," from PIE root *ped- "foot." The change of -d- to -l- in Latin-derived languages ("Sabine -l-") parallels that in odor/olfactory; see lachrymose.
The transferred or figurative sense "a guide, a director of the course of others" is by 1590s. The literal sense was extended by 1848 to "one who controls a balloon," and by 1907 to "one who flies an airplane."
As an adjective, 1788 as "pertaining to a pilot;" from 1928 as "serving as a prototype," thus the noun pilot meaning "pilot episode" (etc.), attested from 1962. A pilot light (by 1890) is a very small light kept burning beside a large burner to automatically light the main burner when the flow is turned on.
pilot (v.)
1640s, figurative, "to guide, to lead, direct the course of, especially through an intricate or perilous passage;" 1690s in the literal sense "to conduct (a vessel) as a pilot," from pilot (n.) or from French piloter. Related: Piloted; piloting.
