| 1. | the moon either when in conjunction with the sun or soon after, being either invisible or visible only as a slender crescent. |
| 2. | the phase of the moon at this time. |
| new moon n.
|
new moon  (n ) Pronunciation Key
The phase of the Moon that occurs when it passes between Earth and the Sun, making it either invisible or visible only as a thin crescent at sunset. See more at moon. Compare full moon. |