The Collaborative International Dictionary
Discure
Discure \Dis*cure"\, v. t. [See Discover.] To discover; to reveal; to discoure. [Obs.]
I will, if please you it discure, assay
To ease you of that ill, so wisely as I may.
--Spenser.
Wiktionary
discure
vb. (context obsolete English) To discover; to reveal.