phrasal
1. : in an envelope or wrapper
2. : enclosed within a missive addressed to a person other than the intended recipient
3. : under concealment : in secret
phrasal
1. : in an envelope or wrapper
2. : enclosed within a missive addressed to a person other than the intended recipient
3. : under concealment : in secret
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012