tremies

trémie

[trem-ee; French trey-mee]
noun, plural trémies [trem-eez; French trey-mee] .
a funnellike device lowered into water to deposit concrete.

Origin:
1900–05; < French: hopper < Latin trimodia three-peck measure, equivalent to tri- tri- + mod(ius) measure of grain + -ia -ia

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tremie (ˈtrɛmɪ)
 
n
civil engineering a large metal hopper and pipe used to distribute freshly mixed concrete over an underwater site. The foot of the pipe is kept below the concrete level, while the upper level of the concrete in the pipe is kept above the water level to prevent the water diluting the concrete
 
[C20: from French, from Italian tramoggia, from Latin trimodia a three-peck measure]

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