Wattle and daub construction. Image courtesy of Wikimedia user Ziko.

waterfall (n)

- a permanent flow of water over a cliff

waterwheel (n)

- a wheel, propelled by running or falling water, used to power machinery

wattle and daub (n)

- a construction of wet clay or sand spread over a weave of branches and twigs to form a wall, barrier, fence, or roof

weather (n)

- the short term state of the atmosphere at a specific time and place, including the temperature, cloud cover, precipitation, and wind

wetlands (n)

- land that is covered mostly with water

wigwam (n)

- a Native American dwelling having an arched framework overlaid with bark, hides, or mats

wildlife (n)

- animals living in their natural habitat