{n. phr.}, {informal} A hint; secret information given to someone to make him act; idea. * /I saw Mary at the jeweler's admiring the diamond pin; I'll put a bug in Henry's ear./
BUG IN ONE'S EAR
Meaning of BUG IN ONE'S EAR in English
Slang English vocab. Английский сленговый словарь. 2012