Definitions from Wiktionary (mail cover)
▸ noun: (US) An investigative technique in which the United States Postal Service, acting at the request of a law enforcement agency, records information from the outside of letters and parcels before they are delivered and sends that information to the requesting agency.
▸ Words similar to mail cover
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▸ noun: (US) An investigative technique in which the United States Postal Service, acting at the request of a law enforcement agency, records information from the outside of letters and parcels before they are delivered and sends that information to the requesting agency.
Similar:
envelope,
postal cover,
letter cover,
mailing cover,
mail wrapper,
air,
armor,
armour,
bill,
blind,
more...
Opposite:
▸ Words similar to mail cover
▸ Usage examples for mail cover
▸ Idioms related to mail cover
▸ Wikipedia articles (New!)
▸ Words that often appear near mail cover
▸ Rhymes of mail cover
▸ Invented words related to mail cover