Voracious? Gorge, feed? Aye, regularly (6)
I believe the answer is:
greedy
'voracious?' is the definition.
(I've seen this before)
'gorge feed? aye regularly' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'gorge'+'feed'+'aye'='gorgefeedaye'
The alternate letters of 'gorgefeedaye' are 'GREEDY'.
(Other definitions for greedy that I've seen before include "Grasping" , "Very eager to get" , "Starving" , "pig!" , "Having excessive desire for food or money" .)