v. phr. 1. To cease to talk about; set aside; forget. This is such an unpleasant subject that I suggest we let it drop for a few days. 2. To disclose; hint. He unexpectedly let drop that he was resigning and joining another firm.
LET DROP
Meaning of LET DROP in English
American idioms English vocabulary. Английский словарь американских идиом. 2012