Definition of flints:
(n) :
A hard, fine-grained quartz that fractures conchoidally and generates sparks when struck against a material such as steel, because tiny chips of the steel are heated to incandescence and burn in air.
(n) :
A piece of flint, such as a gunflint, used to produce a spark by striking it with a firestriker.
(n) :
A small cylinder of some other material of the same function in a cigarette lighter, etc.
(n) :
A type of maize/corn with a hard outer hull.
(n) :
(figurative) Anything figuratively hard.
(v) :
(transitive) To furnish or decorate an object with flint.