Chambers''s Etymological Dictionary of the English Language
William Chambers
See Hash. hackly, hak''li, adj. rough and broken, as if hacked or chopped : in min., covered with sharp points. haggle, hag''l, v. f., to hack into small Aieces; to cut unskilfully; to mangle:—for-£. hagg''ling ; £a.A. haggled. [dim. of Scot. hag, Ice. Aogga, to hack.] Hack, a hackney. See under Hackney. Hackle, hak''1, m. an instrument with hooks or iron teeth for sorting hemp or flax : any flimsy substance unspun : a feather in a cock''s neck; a hook and fly for angling, dressed with this feather.