Tom Petty originally heard round tent (6)
I believe the answer is:
teepee
'tent' is the definition.
(I know that teepee is a type of tent)
'tom petty originally heard' is the wordplay.
'originally' says to take the initial letters.
'heard' shows a homophone (sound like).
The first letters of 'tom petty' is 'tp'.
'tp' is a homophone of 'TEEPEE'.
'round' is the link.
(Other definitions for teepee that I've seen before include "N. American native tent" , "Conical tent of American Indians" , "Tent used by American aborigines" , "Cone-shaped tent of animal skins" , "Conical American Indian tent" .)