Catcher's stance (6)
I believe the answer is:
crouch
'catcher's stance' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for crouch that I've seen before include "Stoop with knees bent" , "Spurs footballer" , "Duck" , "Adopt a low static position -- Essex river" , "Prepare to spring" .)