Third-person singular simple present indicative form of arch

The state of being arch.

present participle of arch

The arched part of a structure.

(nautical) hogging, as opposed to sagging

(philosophy, often italicized) The first principle of existing things in pre-Socratic philosophy, initially assumed to be of water.

Arches National Park, a national park in Utah

Abbreviation of archaic. / Abbreviation of architectural.

(uncountable) Abbreviation of archaism. / (uncountable) Abbreviation of archery. / (countable) Abbreviation of archipelago. / (countable) Abbreviation of architect.

(astronomy) One of the moons of Jupiter.