Traders can go short at the bid price.
The terminology is from the broker point of view, they are bidding to buy from you.
Other Trading Basics
How big companies finance short-term cash flow.
Like bonds but without the coupon, instead, the APR is determined by the discount the agreements are entered into and the length of time to repayment.
For example, a blue chip company might borrow $9.95m dollars today and repay $10m in a month’s time.