"arches" in the noun sense
1. arch
a curved shape in the vertical plane that spans an opening
2. arch
a curved bony structure supporting or enclosing organs (especially the inner sides of the feet)
3. arch, archway
a passageway under a curved masonry construction
"they built a triumphal arch to memorialize their victory"
4. arch
architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it
"arches" in the verb sense
1. arch, curve, arc
form an arch or curve
"her back arches"
"her hips curve nicely"
Source: WordNet® (An amazing lexical database of English)
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