Word:

Expansion joint

(Mech. & Engin.) a yielding joint or coupling for so uniting parts of a machine or structure that expansion, as by heat, is prevented from causing injurious strains;
A slide or set of rollers, at the end of bridge truss, to support it but allow end play.
A telescopic joint in a steam pipe, to permit one part of the pipe to slide within the other.
A clamp for holding a locomotive frame to the boiler while allowing lengthwise motion.
a strip of compressible material placed at intervals between blocks of poured concrete, as in roads or sidewalks.

See also: Expansion Expansion Expansion Expansion Expansion

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Expander
expandible
Expanding
Expanding bit
Expanding pulley
expanding upon
Expanse
Expansibility
Expansible
Expansile
Expansion
expansion bit
expansion bolt
expansion card
Expansion curve
Expansion gear
-- Expansion joint --
expansion slot
Expansion valve
expansionism
expansionist
Expansive
expansive bit
expansively
expansiveness
expansivity
Expansure
Expatiate
Expatiation
Expatiatory
Expatriate
Expatriation
Expect
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