frost flower
nounDefinition of frost flower
1a
: a small bulbous herb (Milla biflora) of Mexico and the southwestern U.S.
also
: its star-shaped flower
— called also floating star
b
: a plant of the genus Aster
c
: frostweed
2
: an ice crystal resembling a flower
especially
: one formed on the ground or in the subsoil