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Origin and history of pilot

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.

also from 1510s

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.

also from 1640s

Entries linking to pilot

lachrymose(adj.)

also lacrymose, 1660s, "tear-like," from Latin lacrimosus "tearful, sorrowful, weeping," also "causing tears, lamentable," from lacrima, lacryma "a tear," a dialect-altered borrowing of Greek dakryma "a tear," from dakryein "to shed tears, weep, lament with tears," from dakry "a tear" (reconstructed in Watkins to be from PIE *dakru- "tear;" see tear (n.1)).

The meaning "given to tears, tearful" is attested by 1727; the meaning "of a mournful character" is by 1822. Related: Lachrymosely.

The -d- to -l- alteration in Latin is the so-called "Sabine -L-"; compare Latin olere "smell," from root of odor, and Ulixes, the Latin form of Greek Odysseus.

The Medieval Latin practice of writing -ch- for -c- before Latin -r- also altered anchor, pulchritude, sepulchre. The -y- is pedantic, from the former belief that the word was pure Greek. Earlier in the same sense was lachrymental (1620s). Middle English had lacrymable "tearful" (mid-15c.).