also share-cropper, 1887, in a U.S. Southern context; from share (v.) + agent noun from crop (v.); share-crop system is attested from 1871. As a verb, share-crop is recorded by 1867. Sharecropping (n.) is attested by 1936.
1580s, "to apportion to someone as his share; to apportion out to others; to enjoy or suffer (something) with others," from share (n.1). The meaning "to divide one's own and give part to others" is recorded from 1590s; also "have a part, get one's portion;" also, of two or more, "to each take a portion."
The sense of "confess one's sins openly" (1932, implied in sharing) is said in OED to be from the Moral Rearmament movement, in which "the sharing of our sins and temptations with another Christian life given to God" was a principal spiritual activity. Share and share alike is attested from 1560s. Related: Shared; sharing.
c. 1200, "cut off the top of a plant," from crop (n.). Mid-14c. in reference to animals feeding on plants. The general meaning of "to cut off" is attested from mid-15c. Meaning "cut off a part of (the ear of an animal) as a mark of identification is from c. 1600. In reference to clipping of cloth, by 1711. Women's fashion crop top is attested from 1984.
With up, "to sprout, appear apparently without design from below the surface" is from 1844, said by OED to be from an earlier use in mining in reference to veins of ore or strata of rock, "come to the surface, become visible on the ground" (1660s). Related: Cropped; cropping.
<a href="https://www.etymonline.com/word/sharecropper">Etymology of sharecropper by etymonline</a>
Harper, D. (n.d.). Etymology of sharecropper. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/sharecropper