full moon

US /ˌfʊl ˈmuːn/
UK /ˌfʊl ˈmuːn/
"full moon" picture
1.

luna llena

the phase of the moon when it is fully illuminated as seen from Earth

:
The sky was bright under the full moon.
El cielo estaba brillante bajo la luna llena.
We watched the full moon rise over the mountains.
Vimos la luna llena salir sobre las montañas.