pick up v.

early 13c., picken "to peck;" c. 1300, piken "to work with a pick, to dig up," probably representing a fusion of Old English *pician "to prick," (implied by picung "a piercing, pricking," an 8c. gloss on Latin stigmata) with Old Norse pikka "to prick, peck," both from a Germanic root (source also of Middle Dutch picken, German picken "to pick, peck"), perhaps imitative. Influence from Middle French piquer "to prick, sting" (see pike (n.1)) also is possible, but that French word generally is not considered a source of the English word. Related: Picked; picking.

Meaning "to pluck with the hand or fingers, gather, break off, collect" (fruit, etc.) is from early 14c.; that of "to prick or pierce with a pointed instrument" also is from early 14c. The meaning "to choose, sort through carefully in search of valuable material" emerged late 14c., from the earlier meaning "to pluck with the fingers." The sense of "to rob, plunder" (c. 1300) weakened to a milder sense of "steal petty things, filch or pilfer from" by late 14c.  Meaning "to eat with small bites" is from 1580s.

Of locks, etc., "probe or penetrate with a pointed tool," early 15c. The meaning "to pluck (a banjo, etc.) with the fingers" is recorded from 1860. To pick a quarrel, fight, etc. is from mid-15c.; to pick at "annoy with repeated fault-finding" is from 1670s. To pick on "single out for adverse attention" is from late 14c. Also see pick up.

To pick off "shoot one by one" is recorded from 1810; baseball sense, of a pitcher or catcher, "to put out a runner caught off base" is by 1939. To pick and choose "select carefully" is from 1660s (choose and pick is attested from c. 1400). To pick (one's) nose is by mid-15c.

Old English up, uppe, from Proto-Germanic *upp- "up" (source also of Old Frisian, Old Saxon up "up, upward," Old Norse upp; Danish, Dutch op; Old High German uf, German auf "up"; Gothic iup "up, upward," uf "on, upon, under;" Old High German oba, German ob "over, above, on, upon"), from PIE root *upo "under," also "up from under," hence also "over."

As a preposition, "to a higher place" from c. 1500; also "along, through" (1510s), "toward" (1590s). Often used elliptically for go up, come up, rise up, etc. Up the river "in jail" first recorded 1891, originally in reference to Sing Sing, which is up the Hudson from New York City. To drive someone up the wall (1951) is from the notion of the behavior of lunatics or caged animals. Insulting retort up yours (scil. ass) is attested by late 19c.

also pick-up, "that which is picked up," 1848; see pick up (v.). As "act of picking up" from 1882. Meaning "capacity for acceleration" is from 1909; that of "recovery" is from 1916. In reference to a game between informal teams chosen on the spot, from 1905; as an adjective, "composed of such things as are immediately available," by 1859.

Meaning "small truck used for light loads," 1937, is shortened from pickup truck (pickup body is attested from 1928). The notion probably being of a vehicle for use to "pick up" (feed, lumber, etc.) and deliver it where it was wanted.