chaffer

Etymology 1

From Middle English chapfare (“bargain, trade”, noun), equivalent to cheap + fare.

verb

1. (intransitive) To haggle or barter.
   While he is at the front end selling calico to some wearisome old lady, sunbonneted and chaffering, a mischievous boy is very apt to be pocketing lumps of sugar for profit, or starting the faucet of a molasses barrel for fun at the other. 1866, “Mr. Dod's Six Shots”, in Harper's Magazine, volume 32, page 208
   But the people looked much like Caleb’s own. They wore dirty robes, chaffered at fruit stalls, spat, scratched. 1985, Anthony Burgess, Kingdom of the Wicked
2. (transitive) To buy.
3. To talk much and idly; to chatter.
   The Dartie within him made him chaffer for five minutes with young Padwick concerning the favourite for the Cambridgeshire. 1922, John Galsworthy, The Forsyte Saga

noun

1. bargaining; merchandise

Etymology 2

From chaff + -er.

noun

1. (agriculture) The upper sieve of a cleaning shoe in a combine harvester, where chaff is removed
   A fan blows air through the chaffer to remove lightweight material known as chaff. 2003, William W. Casady, “Grain Harvesting Systems”, in Dennis R. Heldman, editor, Encyclopedia of Agricultural, Food, and Biological Engineering, page 449