Outback speedster
I believe the answer is:
emu
(Other definitions for emu that I've seen before include "Bird of tremulous kind" , "it can't get off the ground" , "Australian running bird." , "Physics unit" , "Ratite" .)
I believe the answer is:
emu
(Other definitions for emu that I've seen before include "Bird of tremulous kind" , "it can't get off the ground" , "Australian running bird." , "Physics unit" , "Ratite" .)