Meaning of pesky:
Adj. 1. pesky - causing irritation or annoyance; "tapping an
annoying rhythm on his glass with his fork"; "aircraft noise is
particularly bothersome near the airport"; "found it galling to
have to ask permission"; "an irritating delay"; "nettlesome
paperwork"; "a pesky mosquito"; "swarms of pestering gnats"; "a
plaguey newfangled safety catch"; "a teasing and persistent thought
annoyed him"; "a vexatious child"; "it is vexing to have to admit
you are wrong"
Synonyms: annoying, bothersome, galling, irritating, nettlesome,
pestering, plaguy, vexatious, vexing, plaguey, teasing,
pestiferous
