Meaning of MUSHROOM in English

adj of or pertaining to mushrooms; as, mushroom catchup.

2. mushroom ·noun one who rises suddenly from a low condition in life; an upstart.

3. mushroom ·adj resembling mushrooms in rapidity of growth and shortness of duration; short-lived; ephemerial; as, mushroom cities.

4. mushroom ·noun any large fungus, especially one of the genus agaricus; a toadstool. several species are edible; but many are very poisonous.

5. mushroom ·noun an edible fungus (agaricus campestris), having a white stalk which bears a convex or oven flattish expanded portion called the pileus. this is whitish and silky or somewhat scaly above, and bears on the under side radiating gills which are at first flesh-colored, but gradually become brown. the plant grows in rich pastures and is proverbial for rapidity of growth and shortness of duration. it has a pleasant smell, and is largely used as food. it is also cultivated from spawn.

Webster English vocab.      Английский словарь Webster.