Definition of "rain-cloud" []

• Any cloud from which rain falls: in meteorology called nimbus. (noun)

The Century Dictionary (Public Domain)

• "It's an early summer day in Seattle, broad white of overcast but not rain-cloud, and one can see the ocean from the gallery building in which we stand observing Vrimjoet's gruesome handiwork in the trendy and cobblestoned part of downtown."
• "This leads to the cenote, or well, into which human sacrifices and jade and gold ornaments were thrown to appease the rain-cloud god, Chac."
• "Why drag a somber rain-cloud across a bright blue sky?"