Idiom of the day

buy a round
buy a drink for everyone at the table, 
this one is on me
When Gina was born, I bought a round for the
team. Every player had a drink to honor our
baby.

buy into
believe and support, agree to
support, come onside
He will buy into our plan if the money goes to
needy children.

buy out buy a business and all the
inventory
We knew his business was in debt, so we
offered to buy him out.