Open up, in a way (5)
I believe the answer is:
share
(Other definitions for share that I've seen before include "Contribution; portion" , "Allotted portion" , "Division" , "Give portion to others" , "Helping" .)
I believe the answer is:
share
(Other definitions for share that I've seen before include "Contribution; portion" , "Allotted portion" , "Division" , "Give portion to others" , "Helping" .)