flypaper n.

Old English fleoge "a fly, winged insect," from Proto-Germanic *fleugon "flying insect" (source also of Old Saxon fleiga, Old Norse fluga, Middle Dutch vlieghe, Dutch vlieg, Old High German flioga, German Fliege "fly"); literally "the flying (insect)" (compare Old English fleogende "flying"), from PIE root *pleu- "to flow," which is also the source of fly (v.1).

Originally any winged insect (moths, gnats, beetles, locusts, hence butterfly, etc.) and long used by farmers and gardeners for any insect parasite. Flies figuratively for "large numbers" of anything is from 1590s. Plural flien (as in oxen, etc.) gradually normalized 13c.-15c. to -s. Fly in the ointment is from Eccles. x:1. Fly on the wall "unseen observer" first recorded 1881. No flies on _____ "no lack of activity or alertness on the part of," is attested by 1866. Meaning "fish-hook dressed to resemble an insect" is from 1580s; Fly-fishing is from 1650s. Fly-catcher "bird which eats insects on the wing" is from 1670s. The fly agaric mushroom (1788) so called because it was used as a poison for flies.

The sense of "a flight, flying" is from mid-15c. From the verb and the notion of "flapping as a wing does" comes the noun sense of "tent flap" (1810), which was extended to "strip of material sewn into a garment as a covering for buttons" or some other purpose (1844). Baseball fly ball attested by 1866. To do something on the fly is 1856, apparently from baseball.

When the catcher sees several fielders running to catch a ball, he should name the one he thinks surest to take it, when the others should not strive to catch the ball on the fly, but only, in case of its being missed, take it on the bound. ["The American Boys Book of Sports and Games," New York, 1864]

mid-14c., "material consisting of a compacted web or felting of vegetable fibers, commonly as a thin, flexible sheet for writing, printing, etc.," from Anglo-French paper, Old French papier "paper, document," and directly from Latin papyrus "paper, paper made of papyrus stalks," from Greek papyros "any plant of the paper plant genus," a loan-word of unknown origin, often said to be Egyptian (see papyrus).

Sense of "essay, dissertation on a topic" is from 1660s. Meaning "bills of exchange, paper money" is attested by 1722. As "paper for covering the walls of interiors," 1764. As "printed sheet of news" (a shortened form of newspaper), attested by 1640s. Papers, "collection of documents which establish one's identity, standing, credentials, etc.," it is attested from 1680s.

Paper-clip is by 1875; paper-cutter as a type of machine is by 1969. Paper-hanger is by 1796. Paper-wasp " type of wasp that builds a nest out of paper-like material" is by 1805. Paper chase is by 1856 in British English for the game of hare-and-hounds, from the bits of paper scattered as "scent" by the "hares;" the slang meaning "effort to earn a diploma or college degree" is by 1932.