The-die-is-cast

noun, plural dies for 1, 2, 4, dice for 3.
1.
Machinery.

any of various devices for cutting or forming material in a press or a stamping or forging machine.
a hollow device of steel, often composed of several pieces to be fitted into a stock, for cutting the threads of bolts or the like.
one of the separate pieces of such a device.
a steel block or plate with small conical holes through which wire, plastic rods, etc., are drawn.

2.
an engraved stamp for impressing a design upon some softer material, as in coining money.
3.
singular of dice.
4.
Architecture. dado (def 1).
verb (used with object), died, dieing.
5.
to impress, shape, or cut with a die.
Idioms
6.
the die is cast, the irrevocable decision has been made; fate has taken charge:
The die is cast—I can’t turn back.
verb (mainly intransitive) dies, dying, died
1.
(of an organism or its cells, organs, etc) to cease all biological activity permanently: she died of pneumonia
2.
(of something inanimate) to cease to exist; come to an end: the memory of her will never die
3.
often foll by away, down, or out. to lose strength, power, or energy, esp by degrees
4.
often foll by away or down. to become calm or quiet; subside: the noise slowly died down
5.
to stop functioning: the engine died
6.
to languish or pine, as with love, longing, etc
7.
(usually foll by of) (informal) to be nearly overcome (with laughter, boredom, etc)
8.
(theol) to lack spiritual life within the soul, thus separating it from God and leading to eternal punishment
9.
(transitive) to undergo or suffer (a death of a specified kind) (esp in phrases such as die a saintly death)
10.
(foll by to) to become indifferent or apathetic (to): to die to the world
11.
(informal) never say die, never give up
12.
die hard, to cease to exist after resistance or a struggle: old habits die hard
13.
die in harness, to die while still working or active, prior to retirement
14.
be dying, foll by for or an infinitive. to be eager or desperate (for something or to do something): I’m dying to see the new house
15.
(informal) to die for, highly desirable: a salary to die for
noun
1.

a shaped block of metal or other hard material used to cut or form metal in a drop forge, press, or similar device
a tool of metal, silicon carbide, or other hard material with a conical hole through which wires, rods, or tubes are drawn to reduce their diameter

2.
an internally-threaded tool for cutting external threads Compare tap2 (sense 6)
3.
a casting mould giving accurate dimensions and a good surface to the object cast See also die-cast
4.
(architect) the dado of a pedestal, usually cubic
5.
another name for dice (sense 2)
6.
as straight as a die, perfectly honest
7.
the die is cast, the decision that commits a person irrevocably to an action has been taken

die (dī)
v. died, dy·ing (dī’ĭng), dies

To cease living; become dead; expire.

To cease existing, especially by degrees; fade.

die