Pale and pass out (5)
I believe the answer is:
faint
This clue is a double definition.
'pale' is the first definition.
(thesaurus)
'pass out' is the second definition.
(fainting is a kind of passing out)
'and' acts as a link.
(Other definitions for faint that I've seen before include "Weak" , "Swoon, lose consciousness" , "Swoon, pass out" , "Pale - pass out" , "Dim -- swoon" .)