Display pig outside hotel (4)
I believe the answer is:
show
'display' is the definition.
(I know that display is a kind of show)
'pig outside hotel' is the wordplay.
'pig' becomes 'sow' (I've seen this before).
'outside' indicates putting letters inside (some letters go outside others).
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'sow' enclosing 'h' is 'SHOW'.
(Other definitions for show that I've seen before include "Screen" , "Allow to be seen" , "Display; prove" , "Musical featuring 'Old Man River'" , "charade" .)