Any boon which comes into one's hands by good luck.
Food miraculously produced for the Israelites in the desert in the book of Exodus.
The sugary sap of the manna gum tree which oozes out from holes drilled by insects and falls to the ground around the tree.http://www.museum.vic.gov.au/forest/plants/gum.html
The occurrence and development of events by chance in a happy or beneficial way.
An unsought, unintended, and/or unexpected, but fortunate, discovery and/or learning experience that happens by accident.
A combination of events which have come together by chance to make a surprisingly good or wonderful outcome.