Meaning

1 senses
  1. (US)An envelope whose mailing for an authorized purpose does not requiring postage, while its unauthorized use may be penalized.

    The voter should take their absentee ballot to a post office, ask for a penalty envelope and mail it with the ballot inside.

Forms

plural: penalty envelopes

See also

neighbours in the dictionary
penalty envelope — meaning, examples, forms, synonyms | Krumeto