Shin up
Definition 1 of 1
Pro Tip 1/3Physical Action
Shin up is a physical action requiring both strength and agility to perform. 
The firefighter had to quickly shin up the ladder during the drill.
Pro Tip 2/3Informal Usage
The phrase is informal and more common in spoken English or casual settings. 
When we were kids, we'd often shin up trees in the backyard.
Pro Tip 3/3Hand-and-Foot Climb
'Shin up' implies using both hands and feet to grip and climb, unlike walking or jumping. 
The thief shinned up the drainpipe to get onto the roof.