Tonight's full moon is called the Full Worm Moon because this is the time of year when the ground begins to soften and thaw after the long frozen winter and earthworms begin to reappear, providing food for the recently returned robins. This moon is also known as the Full Sap Moon as this is the time when the sap begins to flow and the annual tapping of maple trees begins.
This full moon is in Libra, and as such we'll find ourselves working on our relationships, embracing love and acceptance and becoming aware of our own needs within the relationships in our lives. Libra is the sign of love, balance and acceptance.
Other names for this moon are the Full Fish Moon, the Sleepy Moon, the Chaste Moon, and the Moon of Winds. Various Native American tribal names for it are the Full Windy Moon, the Big Famine Moon, and from the Dakota Sioux, the Moon When Eyes Are Sore From Bright Snow. Its neo-pagan name is the rather ominously named Death Moon.