arch

nouns

a curved shape in the vertical plane that spans an opening
is a type of (narrower)
the trace of a point whose direction of motion changes
a curved bony structure supporting or enclosing organs (especially the inner sides of the feet)
is a type of (narrower)
any structure created by the skeleton of an organism
a passageway under a curved masonry construction
"they built a triumphal arch to memorialize their victory"
(architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it
is a part of
a conduit that resembles a bridge but carries water over a valley
is a part of
a structure composed of a series of arches supported by columns
is a part of
a structure that allows people or vehicles to cross an obstacle such as a river or canal or railway etc.
domain category
the discipline dealing with the principles of design and construction and ornamentation of fine buildings
"architecture and eloquence are mixed arts whose end is sometimes beauty and sometimes use"
is a type of (narrower)
a thing constructed; a complex entity constructed of many parts
"the structure consisted of a series of arches"; "she wore her hair in an amazing construction of whirls and ribbons"

verbs

form an arch or curve
"her back arches"; "her hips curve nicely"

adjectives

(used of behavior or attitude) characteristic of those who treat others with condescension
expert in skulduggery
"an arch criminal"
is similar to
having or showing or requiring special skill
"only the most skilled gymnasts make an Olympic team"; "a skilled surgeon has many years of training and experience"; "a skilled reconstruction of her damaged elbow"; "a skilled trade"
naughtily or annoyingly playful
"teasing and worrying with impish laughter"; "a wicked prank"