Regularly bring in meat for spring (6)
I believe the answer is:
vernal
'for spring' is the definition.
(similar in meaning)
'regularly bring in meat' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'in' indicates putting letters inside.
'meat' becomes 'veal' (veal is a kind of meat).
The alternate letters of 'bring' are 'rn'.
'rn' inserted into 'veal' is 'VERNAL'.
(Other definitions for vernal that I've seen before include "- - equinox" , "Seasonal breaks" , "Spring-like" , "Occuring in spring" , "Pertaining to spring" .)