pilferage (n.)youdaoicibaDictYouDict[pilferage 词源字典]
1620s, from pilfer + -age.[pilferage etymology, pilferage origin, 英语词源]
pilgrim (n.)youdaoicibaDictYouDict
c. 1200, pilegrim, from Old French pelerin, peregrin "pilgrim, crusader; foreigner, stranger" (11c., Modern French pèlerin), from Late Latin pelegrinus, dissimilated from Latin peregrinus "foreigner" (source of Italian pellegrino, Spanish peregrino), from peregre (adv.) "from abroad," from per- "beyond" + agri, locative case of ager "country" (see acre).

Change of first -r- to -l- in most Romance languages by dissimilation; the -m appears to be a Germanic modification. Pilgrim Fathers "English Puritans who founded Plymouth colony" is first found 1799 (they called themselves Pilgrims from c. 1630, in reference to Hebrew xi:13).
pilgrimage (n.)youdaoicibaDictYouDict
late 13c., pelrimage; from pilgrim + -age and also from Old French pelrimage, pelerinage "pilgrimage, distant journey, crusade," from peleriner "to go on a pilgrimage." Modern spelling from early 14c.
PilipinoyoudaoicibaDictYouDict
1936, from Tagalog form of obsolete Spanish Pilipino (see Filipino).
pill (n.)youdaoicibaDictYouDict
"small ball or round mass of medicine," c. 1400, from Middle Dutch or Middle Low German pille and Middle French pile, all from Latin pilula "pill," literally "little ball," diminutive of pila "a ball, playing ball," said to be related to pilus "hair" if the original notion was "hairball." Figurative sense "something disagreeable that must be swallowed" is from 1540s; slang meaning "boring person" is recorded from 1871. The pill "contraceptive pill" is from 1957.
pill (v.)youdaoicibaDictYouDict
1736, "to dose on pills," from pill (n.). From 1882 as "to form into pills." Related: Pilled; pilling.
pillage (n.)youdaoicibaDictYouDict
late 14c., "act of plundering" (especially in war), from Old French pilage (14c.) "plunder," from pillier "to plunder, loot, ill-treat," possibly from Vulgar Latin *piliare "to plunder," probably from a figurative use of Latin pilare "to strip of hair," perhaps also meaning "to skin" (compare figurative extension of verbs pluck, fleece), from pilus "a hair" (see pile (n.3)).
pillage (v.)youdaoicibaDictYouDict
"plunder, despoil," 1590s, from pillage (n.). Related: Pillaged; pillaging. The earlier verb in English was simply pill (late Old English), which probably is from Latin pilare.
pillar (n.)youdaoicibaDictYouDict
c. 1200, from Old French piler "pillar, column, pier" (12c., Modern French pilier) and directly from Medieval Latin pilare, from Latin pila "pillar, stone barrier." Figurative sense of "prop or support of an institution or community" is first recorded early 14c. Phrase pillar to post is c. 1600, originally of tennis, exact meaning obscure.
pillbox (n.)youdaoicibaDictYouDict
also pill-box, "box for holding pills," 1730, from pill (n.) + box (n.). As a small round concrete machine gun nest, it came into use in World War I. As a type of hat, attested from 1958.
pillbug (n.)youdaoicibaDictYouDict
also pill-bug, 1841, from pill (n.) + bug (n.).
piller (n.)youdaoicibaDictYouDict
"plunderer," early 14c., from obsolete verb pill "to plunder, to pillage" (see pillage (v.)).
pillion (n.)youdaoicibaDictYouDict
kind of saddle, c. 1500, of Celtic origin (compare Irish pillin, Gaelic pillin), ultimately from Latin pellis "skin, pelt" (see film (n.)).
pillock (n.)youdaoicibaDictYouDict
1530s, dialectal variant of Middle English pillicock (see cock (n.1)). Meaning "stupid person" is attested by 1967.
pillory (n.)youdaoicibaDictYouDict
late 13c. (attested in Anglo-Latin from late 12c.), from Old French pilori "pillory" (mid-12c.), related to Medieval Latin pilloria, of uncertain origin, perhaps a diminutive of Latin pila "pillar, stone barrier" (see pillar), but OED finds this proposed derivation "phonologically unsuitable."
pillory (v.)youdaoicibaDictYouDict
c. 1600, from pillory (n.). Figurative sense of "expose publicly to ridicule or abuse" is from 1690s. Related: Pilloried.
pillow (n.)youdaoicibaDictYouDict
Middle English pilwe, from Old English pyle "pillow," from West Germanic *pulwi(n) (cognates: Old Saxon puli, Middle Dutch polu, Dutch peluw, Old High German pfuliwi, German Pfühl), an early borrowing (2c. or 3c.) from Latin pulvinus "little cushion, small pillow," of uncertain origin. Modern spelling is from mid-15c. Pillow fight (n.) attested from 1837; slang pillow talk (n.) first recorded 1939.
pillow (v.)youdaoicibaDictYouDict
1620s, from pillow (n.). Related: Pillowed; pillowing.
pilon (n.)youdaoicibaDictYouDict
1892, from Mexican Spanish, from Spanish pilón "sugar loaf."
pilot (n.)youdaoicibaDictYouDict
1510s, "one who steers a ship," from Middle 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- (1) "a foot" (see foot (n.)). Change of -d- to -l- in Latin ("Sabine -l-") parallels that in odor/olfactory; see lachrymose.

Sense extended 1848 to "one who controls a balloon," and 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. Pilot light is from 1890.