tumble (Noun) — An acrobatic feat of rolling or turning end over end.
tumble (Noun) — A sudden drop from an upright position. ex. "he had a nasty tumble on the ice"
tumble (Verb) — Fall down, as if collapsing. ex. "The tower of the World Trade Center tumbled after the plane hit it"
tumble (Verb) — Cause to topple or tumble by pushing.
tumble (Verb) — Roll over and over, back and forth.
tumble (Verb) — Fly around. ex. "The clothes tumbled in the dryer"
tumble (Verb) — Fall apart. ex. "the building tumbled after the explosion"
tumble (Verb) — Throw together in a confused mass. ex. "They tumbled the teams with no apparent pattern"
tumble (Verb) — Understand, usually after some initial difficulty.
tumble (Verb) — Fall suddenly and sharply. ex. "Prices tumbled after the devaluation of the currency"
tumble (Verb) — Put clothes in a tumbling barrel, where they are whirled about in hot air, usually with the purpose of drying. ex. "Wash in warm water and tumble dry"
tumble (Verb) — Suffer a sudden downfall, overthrow, or defeat.
tumble (Verb) — Do gymnastics, roll and turn skilfully.