v.
1.sell securities or commodities or foreign currency that is not actually owned by the seller, who hopes to cover (buy back) the sold items at a lower price and thus to earn a profit
2.underestimate the real value or ability of
Idiom of the Day
lay in (something) or lay (something) in
to store up a supply of something, to get and store something for future use
The farmer is trying to lay in as much food as possible before winter comes.