Hash out
Definition 1 of 1
Pro Tip 1/3Problem Solving
Use 'hash out' when discussing problems to find a solution collaboratively. 
Let's hash out the scheduling issues tomorrow.
Pro Tip 2/3Decision Making
'Hash out' implies a mutual effort to reach a decision or agreement, often requires several discussions. 
We've got to hash out whether to expand our business.
Pro Tip 3/3Casual Context
Often used in an informal setting, such as a conversation among colleagues or friends. 
We need to hash out where we're going for the team dinner.