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English definition of “arch”

arch

noun [C] (CURVED STRUCTURE)    /ɑːtʃ/ US  /ɑːrtʃ/
C2 a structure , consisting of a curved top on two supports , that holds the weight of something above it: In many churches the side aisles are separated from the central aisle by a row of arches. Passing through the arch, you enter an open courtyard . The vines were trained over an arch, providing shade as well as fruit . The temple's grand white arches rose conspicuously over the dirty decaying city . The abbey is known for its majestic arches, fine doorways and elegant windows . The abbey is known for its majestic arches, fine doorways and elegant windows . The town is dominated by the massive arches of a viaduct . → See also archwayArches, columns and beams
(Definition of arch noun (CURVED STRUCTURE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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