Espi'al n.s. [French, from espier.] A spy; a scout; one sent to bring intelligence.
Those four garrisons, issuing forth at such convenient times as they shall have intelligence, or espial upon the enemy, will drive him from one side to another. Spencer on Ireland.
As he march'd along,
By your espials were discovered
Two mightier troops. Shakesp.
'Spials have informed me,
The English in the suburbs close entrench'd,
Went through a secret grate. Shakesp. Hen. VI.
She had some secret espials to look abroad for graceful youths, to make Plantagenets. Bac. H. VII.