arch

ARCH noun

[ C ] uk/ɑːtʃ/ us arch noun [C]
(FOOT)

the curved, middle part of your foot that does not touch the ground

свод стопы

arch verb [ I,T ] uk/ɑːtʃ/ us
to be a curved shape or make something become a curved shape

возвышаться сводом, изгибать дугой
The bridge arch ed over the river. She arch ed her back.