acrobat

An athlete who performs acts requiring skill, agility and coordination, often as part of a circus performance.

To practise acrobatics.

Tumbling is different from posturing, and means throwing summersets and walking on your hands; and acrobating means the two together […]

They seem to think as clowning and acrobating is a downright paradise, and comes as naturally to anybody as the measles.

To move like an acrobat (with agility, balance, long leaps, etc.).

We have known […] veteran reporters, so dumbfounded and confounded by the first fire of Ralph, and his grand and lofty acrobating in elocution, that they up, seized their hat and paper, and sloped, horrified at the prospect of an attempt to “take down” Mr. Emerson.

[…] I laughed at the very idea of one of those heavy-pouched, blue-clad fellows catching hold of an agile fellow like I was, who had on more than one occasion acrobated from the engine’s tender back to the rear end of the caboose, by swinging and vaulting from truck to truck, underneath long freight trains running at top speed, with no member of the ever-alert train crew having discovered him.