1. a hard stone, a form of silica resembling chalcedony but more opaque, less pure, and less lustrous.
  2. a piece of this, especially as used for striking fire.
  3. a chunk of this used as a primitive tool or as the core from which such a tool was struck.
  4. something very hard or unyielding.
  5. a small piece of metal, usually an iron alloy, used to produce a spark to ignite the fuel in a cigarette lighter.
verb (used with object)
  1. to furnish with flint.

Origin of flint

before 900; Middle English, Old English; cognate with Middle Dutch vlint, Danish flint; cf. plinth
Related formsflint·like, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for flinted


  1. a town in NE Wales, in Flintshire, on the Dee estuary. Pop: 11 936 (2001)
  2. a city in SE Michigan: closure of the car production plants led to a high level of unemployment. Pop: 120 292 (2003 est)


  1. an impure opaque microcrystalline greyish-black form of quartz that occurs in chalk. It produces sparks when struck with steel and is used in the manufacture of pottery, flint glass, and road-construction materials. Formula: SiO 2
  2. any piece of flint, esp one used as a primitive tool or for striking fire
  3. a small cylindrical piece of an iron alloy, used in cigarette lighters
  4. Also called: flint glass, white flint colourless glass other than plate glass
  5. See optical flint
  1. (tr) to fit or provide with a flint

Word Origin for flint

Old English; related to Old High German flins, Old Swedish flinta splinter of stone, Latin splendēre to shine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for flinted



Old English flint "flint, rock," common Germanic (cf. Middle Dutch vlint, Old High German flins, Danish flint), from PIE *splind- "to split, cleave," from root *(s)plei- "to splice, split" (cf. Greek plinthos "brick, tile," Old Irish slind "brick"). Transferred senses were in Old English.

Online Etymology Dictionary, © 2010 Douglas Harper

flinted in Science


  1. A very hard, gray to black variety of chalcedony that makes sparks when it is struck with steel. It breaks with a conchoidal fracture.
  2. The dark gray to black variety of chert.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.