Lie about the position (6)
I believe the answer is:
repose
'lie' is the definition.
(reposing is a kind of liing)
'about the position' is the wordplay.
'about' becomes 're' (regarding).
'the position' becomes 'pose' (I've seen this before).
're'+'pose'='REPOSE'
(Other definitions for repose that I've seen before include "calm" , "Lie at rest" , "Quiet restfulness" , "take it easy" , "Relaxation" .)