dicker UK /ˈdɪkə(ɹ)/US /ˈdɪkɚ/verb 3noun 2forms 3 verb3 •To bargain, haggle or negotiate over a sale. •To barter. •To fiddle.They sat in a booth near the door and drank the first cold ones of the evening while watching three impassioned pinballers dickering with flashing, promising, tilting machines. — 1981 noun2 •(US) A chaffering, barter, or exchange, of small wares. •(no longer used) A unit of measure, consisting of 10 of some object, particularly hides and skins.The dicker, or daker, was ten, and is found, though generally at later times than the period before us, as a measure for hides and gloves. — 1866 formsdickered · dickering · dickers