13c., from Old French
touchier "to touch, hit, knock", from Vulgar Latin
*toccare "to knock, strike" (as a bell), perhaps of imitative origin. Meaning "to get or borrow money" first recorded 1760. The noun is c.1300, from Old French touche "a touching." Touched "stirred emotionally" is from 1340; touching "affecting the emotions" is from 1601; touchy "too sensitive" is from 1605. Touch and go is apparently from a tag-like game, first recorded 1655. Touch-me-not (1597) translates Latin noli-me-tangere. Touchstone (1481) was black quartz, used for testing the quality of gold and silver alloys by the color of the streak made by rubbing them on it. Figurative sense is from 1533.