Noun
One of certain narrow, crooked valleys seen, by aid of the telescope, on the surface of the moon.
Source: Webster's dictionaryThe extinct Meroitic language of ancient Kush has been accepted by linguists such as Rille, Dimmendaal, and Blench as Nilo-Saharan, though others argue for an Afroasiatic affiliation. Source: Internet
The circular patch features stylized red, white and blue birds flying over the Hadley Rille section of the Moon. Source: Internet