|1.||[ verb ] form an arch or curve|
"her back arches" "her hips curve nicely"
|Related terms:||bend camber curvature bow curvature|
|2.||[ adjective ] (of persons) highest in rank or authority or office|
|Synonyms:||top chief head boss|
"his arch rival" "the boss man" "the chief executive" "head librarian" "top administrators"
|3.||[ noun ] (anatomy,zoology) a curved bony structure supporting or enclosing organs (especially arches of the feet)|
|Related terms:||skeletal_structure instep shoulder_girdle hemal_arch neural_arch metatarsal_arch|
|4.||[ noun ] a curved shape in the vertical plane that spans an opening|
|5.||[ adjective ] (used of behavior or attitude) characteristic of those who treat others with condescension|
|Synonyms:||condescending patronizing patronising|
|6.||[ noun ] (architecture) a passageway under an arch|
|Related terms:||entrance wall|
|7.||[ adjective ] expert in skulduggery|
"an arch criminal"
|8.||[ noun ] Last name, frequency rank in the U.S. is 20407|
|9.||[ noun ] (architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it|
|Related terms:||structure trimmer_arch triumphal_arch rampant_arch segmental_arch corbel_arch flat_arch abutment_arch broken_arch pointed_arch proscenium_arch camber_arch rowlock_arch round_arch safety_arch scoinson_arch shouldered_arch skeen_arch skew_arch pier_arch squinch Tudor_arch bridge aqueduct arcade springer voussoir keystone architecture|