Sentence:  Tell me moreouer, haſt thou <WSD>ſounded</WSD> him,/ If he appeale the Duke on ancient malice,/ Or worthily as a good ſubiect ſhould/ On ſome knowne ground of treacherie in him. 
Meaning of the word marked with <WSD> tags:  To ascertain, or try to ascertain, the thoughts, motives, and purposes of (a person); to examine; to try; to test; to probe.