Not tears nor prayers shall purchase out abuses.
Shak.
5. (Law) (a) To acquire by any means except descent or inheritance.
Blackstone. (b) To buy for a price.
6. To apply to (anything) a device for obtaining a mechanical
advantage; to get a purchase upon, or apply a purchase to; as, to
purchase a cannon.
Pur"chase, v. i. 1. To put forth effort to obtain anything; to strive;
to exert one's self. [Obs.]
Duke John of Brabant purchased greatly that the Earl of Flanders
should have his daughter in marriage.
Ld. Berners.