arch Meaning in the Cambridge English Dictionary
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Meaning of “arch” in the English Dictionary

"arch" in British English

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archnoun [C]

uk   /ɑːtʃ/  us   /ɑːrtʃ/

arch noun [C] (CURVED STRUCTURE)

C2 a ​structure, consisting of a ​curvedtop on two ​supports, that ​holds the ​weight of something above it: In many ​churches the ​sideaisles are ​separated from the ​centralaisle by a ​row of arches. Passing through the arch, you ​enter an ​opencourtyard. The ​vines were ​trained over an arch, ​providingshade as well as ​fruit. The temple's ​grandwhite arches ​roseconspicuously over the ​dirtydecayingcity. The ​abbey is ​known for ​itsmajestic arches, ​finedoorways and ​elegantwindows. The ​town is ​dominated by the ​massive arches of a ​viaduct.
See also

arch noun [C] (SHAPE)

something that has the ​shape of an arch, often used for ​decoration: The ​boatfloated through the arch of the ​trees towards the ​bridge.

arch noun [C] (FOOT)

the ​raisedcurve on the ​bottom of ​yourfoot: She has very high arches.

arch noun [C] (BODY)

specialized medical any ​organ or ​part of the ​body that is ​curved in ​shape: The ​prematureloss of ​primaryteethcausesshrinking of the ​dental arch.

archverb [I or T]

uk   /ɑːtʃ/  us   /ɑːrtʃ/
C2 to make the ​shape of an arch: Trees arch over the ​river. Her ​eyebrows arched in ​contempt. She ​watched the ​cat arch ​its back.

archadjective

uk   /ɑːtʃ/  us   /ɑːrtʃ/
showing that you ​think it is ​amusing that you ​know more about something than someone ​else does: an arch ​tone of ​voice
archly
adverb uk   /ˈɑːtʃli/  us   /ˈɑːrtʃli/
She ​smiled archly at him. "I ​fail to ​understand what you're ​suggesting," said Claire archly.

arch-prefix

uk   /ɑːtʃ-/  us   /ɑːrtʃ-/

arch prefix (MAIN)

most ​important: an ​archbishop an ​archduke

arch prefix (EXTREME)

greater or ​especiallyworse than ​others of the same ​type: an arch-criminal his ​arch-enemy He's always been an arch-opponent of the ​project.
(Definition of arch from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"arch" in American English

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archnoun [C]

 us   /ɑrtʃ/
a ​structure consisting of a ​curvedtop on two ​supports which ​holds the ​weight of something above it, or something ​decorative that has this ​shape: Two ​rows of arches ​support the ​roof of the ​building. The arch of ​yourfoot is the ​higher, ​curvedpart on the ​bottom.
arch
verb [I/T]  us   /ɑrtʃ/
[T] Cats often arch ​theirbacks when they ​stretch.
arched
adjective  us   /ɑrtʃt/
Arched ​bookcasesfilled each end of the ​room.
(Definition of arch from the Cambridge Academic Content Dictionary © Cambridge University Press)
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