| arch | the branch of anthropology that studies prehistoric people and their cultures |
|---|---|
| arch | extinct primitive toothed bird of the Upper Jurassic having a long feathered tail and hollow bones |
| arch | the time prior to 2,500 million years ago |
| arch | (geology) formed in the earlier of two divisions of the Precambrian era |
| arch | the time prior to 2,500 million years ago |
| arch | of or associated with an archbishop |
| arch | the ninth sign of the zodiac |
| arch | (astrology) a person who is born while the sun is in Sagittarius |
| arch | a person who is expert in the use of a bow and arrow |
| arch | any of several small freshwater fishes that catch insects by squirting water at them and knocking them into the water |
| arch | the sport of shooting arrows with a bow |
| arch | a national park in Utah including mountains and the Colorado River gorge and huge rock formations caused by erosion |