Emu I lift from the bottom entertains hip insider? (5)
I believe the answer is:
ilium
'hip insider?' is the definition.
(bone of the hip)
'emu i lift from the bottom entertains' is the wordplay.
'entertains' says the answer is hidden in the clue (the answer is welcomed or entertained by the clue).
'from the bottom' shows that the letters should be reversed in order (in a down clue, letters come from the bottom).
'muili' is hidden in the letters of 'emu i lift'.
'muili' in reverse letter order is 'ILIUM'.
(Other definitions for ilium that I've seen before include "Hipbone" , "classical city" , "Large pelvic bone" , "Large bone of the pelvis" , "hip (at least in part)" .)