buy in
verb- To accept an idea as valid; to join in on a concept.
- To invest as part of a group; to put one's personal stake in an investment.
- To buy back for the owner at an auction.
- For the buyer of securities, whose seller fails to deliver the securities contracted for, to buy the securities from a third party and demand the difference in price from the original seller.
- To stock (something) by buying inventory from a third party. · They buy in coffee beans from a distributor in Carrolton.
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