calash

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A light carriage with two or four low wheels and a collapsible top.
2. n. A top for this or a similar carriage.
3. n. A woman's folding bonnet of the late 18th century.

Century Dictionary and Cyclopedia

1. n. A light carriage with low wheels, either open or covered with a folding top which can be let down at pleasure. The Canadian calash is two-wheeled, and has a seat on the splashboard for the driver.
2. n. The folding hood or top usually fitted to such a carriage. Specifically called a calash-top.—3. A hood in the form of calash-top worn by women in the eighteenth century and until about 1810. It was very large and full, to cover the head-dresses of the period, and was made on a framework of light hoops, capable of being folded back on the shoulders, or raised, by pulling a ribbon, to cover the head and project well over the face. Similar hoods had been worn at earlier times, but the reintroduction under this name appears to date from 1765.
3. n. A primitive one-horse springless cart of the island of Nantucket, Massachusetts, house-chairs being used for seats. It is still used to a limited extent.
4. To furnish with a calash.

Wiktionary

1. n. A sort of light 'convertible' carriage with a folding hood.

GNU Webster's 1913

1. n. A light carriage with low wheels, having a top or hood that can be raised or lowered, seats for inside, a separate seat for the driver, and often a movable front, so that it can be used as either an open or a closed carriage.
2. n. In Canada, a two-wheeled, one-seated vehicle, with a calash top, and the driver's seat elevated in front.
3. n. A hood or top of a carriage which can be thrown back at pleasure.
4. n. A hood, formerly worn by ladies, which could be drawn forward or thrown back like the top of a carriage.

WordNet 3.0

1. n. the folding hood of a horse-drawn carriage
2. n. a woman's large folded hooped hood; worn in the 18th century