Devious woman primarily serving in village eatery (7)
I believe the answer is:
evasive
'devious' is the definition.
(I've seen this before)
'woman primarily serving in village eatery' is the wordplay.
'woman' becomes 'eva' (woman's name).
'primarily' suggests taking the first letters.
The first letters of 'serving in village eatery' is 'sive'.
'eva'+'sive'='EVASIVE'
(Other definitions for evasive that I've seen before include "Tending to avoid commitment" , "Avoiding self-revelation" , "make out-of-the-way sort of action" , "Shifty, equivocal" , "Dissembling" .)