Pooh's friend's time for bed (5)
I believe the answer is:
roost
'for bed' is the definition.
(I've seen this before)
'pooh's friend's time' is the wordplay.
'pooh's friend's' becomes 'roo's' (friend of Winnie the Pooh).
'time' becomes 't' (abbreviation).
'roos'+'t'='ROOST'
(Other definitions for roost that I've seen before include "Perch where bird sleeps" , "The cock rules it" , "Bird's shelter" , "Glowing with joy" , "Place on which bird rests" .)