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Definition of rising main noun from the Oxford Advanced Learner's Dictionary

rising main

noun
 
/ˌraɪzɪŋ ˈmeɪn/
 
/ˌraɪzɪŋ ˈmeɪn/
(British English, specialist)
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  1. a pipe that carries water from under the ground up into a building
trait
noun
 
 
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