look up any word, like hipster:
 
1.
The act of spending one's time on Tumblr.
Not much just tumbling.
by PerogiXW1 April 10, 2011
 
2.
A person who can flip; like in cheerleading. AKA backhandsprings, tucks, layouts, fulls; etc.
Robby goes to tumbling every Tuesday, he is not good at all.

HAHA
by Kuhn Dawg. March 10, 2008
 
3.
Flipping upside down... Boys and girls tumble just for fun. People also tumble in sports such as cheerleading, gymnastics and power tumbling.
Person 1: What is tumbling?
Person 2: Backhandsprings, cartwheels, roundoffs, tucks, fulls, doubles, ect...
by The tumbler June 01, 2012
 
4.
Jewelery for your belly
Woah check out Hollie's tum-bling!
or
Person 1: Woah look at the ring in that belly!
Person 2: I know! Tun-bling or what!
by SirPimpington December 28, 2009
 
5.
The act of having sexual intercourse
Garret was totally tumbling with Jalen.
by IsoSickle April 15, 2014
 
6.
When two people mess around on a bed or couch by tickling, poking, pinching, or any manner of playful physical contact in a loving, fun manner.
"So what do you want to do tonight honey?"

"Watch some TV and go to bed, probably."

"Nooo! Why don't we play some cards or *tumble around for a while!"

"Alrighty then, tumbling it is!"

*Alternate forms of Tumbling can be used openly
by LaNeesh January 24, 2010
 
7.
The rumbling of one's tummy when one is hungery.
Robert: I haven't eaten anything since breakfast and I'm really tumbling. Listen to my stomach!

Billy: Yeah, I can hear your stomach from across the room!
by fishies4ever August 15, 2011