To lessen; to bring low.
To decrease, shrink, diminish, reduce in size or intensity.
To break up or disperse.
To fall away in quality; degenerate, sink.
(intransitive, or transitive with of) To have an insufficient amount (of).
To sell a financial product, such as a share, that one does not presently own, as in the hope of buying it more cheaply later for delivery, so as to profit from a fall in price; cf. go long.