ESPIAL

espial. Espial, n. a spy, scout, ob.

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Es‐pi″al (?), n. [[OE. & Norm. F. espiaille. See Espy.]] 1. 1. The act of espying; notice; discovery.
Screened from espial by the jutting cape. Byron. 2. 2. One who espies; a spy; a scout. “Their espials . . . brought word.” Holland.