Heave case of claret that woman admits lifting (5)
I believe the answer is:
retch
'heave' is the definition.
(I know that heave can be written as retch)
'case of claret that woman admits lifting' is the wordplay.
'case of' suggests removing the centre (outsides of).
'that woman' becomes 'her' (her refers to a woman).
'admits' indicates putting letters inside.
'lifting' is a reversal indicator.
'claret' with its centre taken out is 'ct'.
'ct' going inside 'her' is 'hcter'.
'hcter' back-to-front is 'RETCH'.
(Other definitions for retch that I've seen before include "Strain as if to vomit" , "Sound and seem to vomit" , "Heave (as if to vomit)" , "Strain to be sick" , "Gag, near-vomit" .)