To fall end over end; to roll over and over.
To smoothe and polish, e.g., gemstones or pebbles, by means of a rotating tumbler.
To muss, to make disorderly; to tousle or rumple.
To obscure the audit trail of funds by means of a tumbler.
To perform gymnastics such as somersaults, rolls, and handsprings.
To have sexual intercourse.
To move or rush in a headlong or uncontrolled way.
To drop rapidly.
A fall, especially end over end.
An act of sexual intercourse.
A disorderly heap.
To stand underneath, to support.
To believe, to think one grasps sufficiently despite potentially incomplete knowledge.
To grasp a concept fully in one's mind, especially (of words, statements, art, etc.) to be aware of the meaning of and (of people) to be aware of the intent of.