Espial

n.	1.	The act of espying; notice; discovery. Screened from espial by the jutting cape. - Byron.
	2.	One who espies; a spy; a scout.

Noun

1.

espial - the act of detecting something; catching sight of something Synonyms: catching, detection, spotting, spying

bringing to light, bugging, casual discovery, catching, chance discovery, cloak-and-dagger work, counterespionage, counterintelligence, detection, determination, determining, disclosure, discovery, distinguishment, electronic surveillance, espionage, excavation, exhumation, exposure, find, finding, finding out, following, intelligence, intelligence work, invention, locating, location, looking, lookout, lucky strike, military intelligence, note, notice, observance, observation, recognition, rediscovery, regard, respect, revelation, secret police, secret service, serendipity, shadowing, spotting, spying, stakeout, strike, surveillance, tailing, trailing, treasure trove, trouvaille, trove, uncovering, unearthing, viewing, watch, watching, wiretap, wiretapping, witnessing