Eggs left in the ground (4)
I believe the answer is:
oval
'the ground' is the definition.
(cricket ground)
'eggs left' is the wordplay.
'eggs' becomes 'ova' (I've seen this before).
'left' becomes 'l' (common abbreviation).
'ova'+'l'='OVAL'
'in' is the link.
(Other definitions for oval that I've seen before include "Geometric shape" , "Cricket ground - presidential office" , "Elliptical - cricket ground" , "Where you'll find pavilion" , "Ellipsoidal" .)