Sinus Roris (Moon)

"Bay of Dew"

Sinus Roris is an extension of the northern edge of Oceanus Procellarum. The bay proper is framed along the western edge by the craters Markov and Oenopides, and to the north by Babbage and South. At the eastern edge it joins the Mare Frigoris. (wikipedia entry)

A sinus is a small plain. On the Moon they are named after latin terms describing weather and other abstract concepts.