run-out

[ruhn-out]

Origin:
1865–70; noun use of verb phrase run out

Dictionary.com Unabridged

runout

[ruhn-out]
noun
1.
Machinery.
a.
the gradual termination of a groove on the body of an object not ending there, as the upper termination of a flute in a twist drill.
b.
Also called back clearance. a space in a depressed area of an object into which a machine tool or grinding wheel may safely enter at the end of a pass or operation.
2.
the merging of a curved surface into another surface.
3.
an act or instance of running away so as to evade, abandon, or avoid something.
4.
a person who runs away so as to avoid payment or duty.
5.
an act or instance of expiring or becoming depleted: the runout of a union contract; a runout in office supplies.
6.
uneven wear on the outer edges of a tire or on the rim of a wheel.

Origin:
1925–30; noun use of verb phrase run out

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Example sentences
Hydroplaning is one mechanism that may explain such large runout distances.
The superelevations, superelevation runoffs, and tangent runout lengths meet
  the guidelines for e max design speed and radii.
They are built in depositional or runout areas that have large storage capacity.
Runout threads were inspected visually and could be no less than one, or more
  than two, pitches in length.
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