ETYM Latin, from Greek manna, Hebrew mân; cf. Arabic mann, properly, gift (of heaven).
Sweetish exudation obtained from many trees such as the ash and larch, and used in medicine. The Old Testament (Exodus 16) relates that God provided manna for the Israelites in the desert when there was no other food. The manna of the Bible is thought to have been from the tamarisk tree, or a form of lichen.
Hardened suggary exudation of various trees.