sponge morel(n = noun.plant) common morel, morchella esculenta, sponge mushroom - an edible and choice morel with a globular to elongate head with an irregular pattern of pits and ridges;
is a kind of morel
is a member of genus morchella, morchella

beefsteak morel, bell morel, black morel, california false morel, chuck up the sponge, common morel, conic morel, cup morel, early morel, false morel, glass sponge, half-free morel, loufah sponge, madeira sponge, morel, narrowhead morel, petty morel, saddled-shaped false morel, sponge, sponge bag, sponge bath, sponge cake, sponge cloth, sponge down, sponge genus, sponge gourd, sponge mop, sponge mushroom, sponge off, sponge on, sponge up, thick-footed morel, vegetable sponge, victoria sponge