Acrobat's precaution (3)

I believe the answer is:
net
'acrobat's precaution' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for net that I've seen before include "Ultimate" , "Tennis court feature" , "Catch; fine fabric" , "Mesh; profit" , "Snare or trap" .)