c. 1300, coler, coller, "neck armor, gorget, something worn about the neck," from Old French coler "neck, collar" (12c., Modern French collier), from Latin collare "necklace, band or chain for the neck," from collum "the neck," from PIE *kwol-o- "neck" (source also of Old Norse and Middle Dutch hals "neck"), literally "that on which the head turns," from root *kwel- (1) "revolve, move round."
The spelling was re-Latinized in early modern English. From late 14c. as "border at the neck of a garment," also "band put around the neck of a dog or other animal for purposes of restraint or identification." From mid-15c. as "neck-band forming part of the harness of a horse or other draught-animal."
Middle English sho, "low-cut covering for the human foot," from Old English scoh, from Proto-Germanic *skokhaz (source also of Old Norse skor, Danish and Swedish sko, Old Frisian skoch, Old Saxon skoh, Middle Dutch scoe, Dutch schoen, Old High German scuoh, German Schuh, Gothic skoh). No known cognates outside Germanic, unless it somehow is connected with PIE root *skeu- "cover" (source also of second element in Latin ob-scurus).
The old plural form shoon lasted until 16c. The meaning "metal plate or rim nailed to the hoof of a horse or beast of burden to protect it from injury" is attested from c.1300. The distinction between shoe and boot (n.) is attested from c. 1400.
To stand in someone's shoes "see things from his or her point of view" is attested from 1767. Old shoe as a type of something worthless is attested from late 14c.
Shoes tied to the fender of a newlywed couple's car preserves the old custom (mentioned from 1540s) of throwing an old shoe at or after someone to wish them luck. Perhaps the association is with dirtiness, on the "muck is luck" principle.
1550s, "to grab (someone) by the collar or neck," from collar (n.). Meaning "to capture" is attested from 1610s. Meaning "put a collar on" is from c. 1600. Related: Collared; collaring. As a past-participle adjective, collared "wearing a collar" is from late 14c.
1895, noun and adjective, in reference to a polish given to the shoes, especially by one who does so for pay; from shoe (n.) + shine (n.). Shoe-shine boy is attested by 1906. Earlier names for one who cleans and polishes shoes or boots for money include shoeblacker (1755), also shoeblack (1778), and shoeboy (1724).
by 1935, in reference to jobs or workers, from blue (adj.1) + collar (n.). From the common color of men's work shirts. Contrasted with white-collar (q.v.).