Worm starts to get airborne gripping elephants' trunks? (7)
I believe the answer is:
luggage
'trunks?' is the definition.
(a traveller's trunks or cases)
'worm starts to get airborne gripping elephants'' is the wordplay.
'worm' becomes 'lug' (lug is a kind of worm).
'starts to' suggests taking the first letters.
The initial letters of 'get airborne gripping elephants' is 'gage'.
'lug'+'gage'='LUGGAGE'
(Other definitions for luggage that I've seen before include "Travelling bags etc." , "gear carried" , "Cases etc for travel" , "Travelling cases" , "case?" .)