Definition of stone
1
: a concretion of earthy or mineral matter:
a (1)
: such a concretion of indeterminate size or shape
(2)
: rock
b
: a piece of rock for a specified function: such as
(1)
: a building block
(2)
: a paving block
(3)
: a precious stone : gem
(4)
: gravestone
(5)
: grindstone
(6)
: whetstone
(7)
: a surface upon which a drawing, text, or design to be lithographed is drawn or transferred
2
: something resembling a small stone: such as
a
: calculus 3a
b
: the hard central portion of a drupaceous fruit (such as a peach)
c
: a hard stony seed (as of a date)
3
plural usually stone
: any of various units of weight;
especially
: an official British unit equal to 14 pounds (6.3 kilograms)
4 a
: curling stone
b
: a round playing piece used in various games (such as backgammon or go)
5
: a stand or table with a smooth flat top on which to impose or set type
—
in stone
: in or into a permanent and unchangeable state
- plans are not set in stone
