Send away what is no longer to lie around (5)
I believe the answer is:
exile
'send away' is the definition.
(I've seen this before)
'no longer to lie around' is the wordplay.
'no longer' becomes 'ex' (prefix meaning former or onetime).
'to' means one lot of letters go next to another.
'around' indicates an anagram.
'lie' anagrammed gives 'ile'.
'ex'+'ile'='EXILE'
'what is' is the link.
(Other definitions for exile that I've seen before include "One lives away from the home country" , "Person expelled from home country" , "Expulsion from one's country" , "Person who now lives in another country" , "Deport" .)