Spreads front of silk pants (6)
I believe the answer is:
strews
'spreads' is the definition.
(strewing is a kind of spreading)
'front of silk pants' is the wordplay.
'front of' suggests taking the first letters.
'pants' becomes 'trews' (trews is a kind of pants).
The initial letter of 'silk' is 's'.
's'+'trews'='STREWS'
(Other definitions for strews that I've seen before include "Untidily throws down" , "Spreads by scattering" , "Scatters about" .)