Third-person singular simple present indicative form of arch.(verb)
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Use "arches" in a sentence
"The great arches, and the groin ribs of the aisle ceilings were underset with new pillars; so that we get Early English _arches_ of the thirteenth century on Decorated"
"The Iron Bridge of only three arches is in great forwardness from Queen Stt to the Borough, and another is projected to cross the"
"You can also walk to the arches from the center of town, if you feel the need to exercise."