a late snowstorm, coming at about the time the robins, heralds of spring, are due to return.
See also: smelt storm
- 1947  Once in a while we have a snow flurry [in May]--"robin snow," we call it.
- 1955  Others call it the "Robin Storm," presumably on the theory that the . . . robins [sneak up] into the trees, under the cover of the snow.